
How is she not pregnant after having sex so many times? Like in reality too like i see people on social media be so casual about having sex and im like ,,wtf...as far as i know nothing gives 100% protection and even using condoms can't completely prevent pregnancy so i always kinda wonder how sexually active straight people prevent pregnancy or maybe they don't who knows...

They just kind of answered the question in chapter 21. Apparently they use the good old pull out method!
Which as we know works so splendidly in the world. (〜 ̄△ ̄)〜
Actually, I have a friend who never used contraceptives, not even condoms. She has been with her husband for more than ten years. They used the pull out method. Then, one day, about a year and a half ago, she found out she was pregnant. They kept the baby. No, they aren't Catholic. She's just crunchy. Anyway, that 100% isn't applicable to most women. I just about choked when she told me and naturally asked, "How the hell did you not get pregnant that whole time time?! Prec*m is a thing you know!!"

The power of crunchy?
I dunno. She only told me about it after she got pregnant. I did tell her that normally, that wouldn't work for so long. But she only got pregnant, according to her, because he accidentally ejaculated inside her.
I said something like, "Wait... All this time, it's never happened? Not once? How often are you two doing it?"
Several times a week. For more than ten years. Holy freaking crap!
Anyway, she had him when she was 37. No issues whatsoever. Perfectly healthy, natural birth. Little man will probably be home schooled.
She just rolled with it, which is why abortion or Plan B wasn't on the table. Her plans didn't involve being a mom, but she wasn't averse to it. Her husband didn't care either. They're the type where "if it happens, it happens".
An example: her and her husband, before they got married, decided to book a one-way ticket to South America. The plan was the hitch hike and walk all the way back to Tijuana. They made money teaching yoga and slept in barns, sheds, etc.
She texted me to let me know where she was every so often. About ten months later, they finally crossed the border back to the US.
There's other crazy stories, but suffice to say, her life is crazy and I don't know how she survived unscathed. She has the luck of the devil.

I'm sure that in most cases everyone, to some degree, would be affected.
Not her!
When I first met her and she told me stories about some of the crazy things she'd already done, I thought she was BSing me. But then she showed me the photos and her journals. When we became friends, she began to text and email me. I've known her for almost twenty years. She was a co-worker of mine at my first job and honestly, that whole story is crazy by itself, and I was involved in it.
I told her she needs to publish this stuff on the web since it's amazing and insane.
She's not interested. Some of the stuff is kind of hard to believe and unless you know her, you'd think she was a liar or crazy.
But when you witness your boss and her exchange magic spells at each other in the office, because he thinks his profit downturn is caused by manifestations of karma demons or something, and she's freaking out and fighting back because she doesn't want herself or anyone else in the office to be blighted by aforementioned karma demons, you kind of... get it. ヾ(❀╹◡╹)ノ~

Unfortunately, the only thing she wants to do is share her journals with her son when he gets older. He might be a different story though.
So in twenty years or whatever if you see a book with hitchhiking in South America teaching yoga, zany stories about dealing with an eccentric, unpredictable boss who is afraid of karma demons from the shady crap he was doing, going into the New Mexico desert trying to find yourself while on peyote, and traveling to India for a wedding, but staying longer to do a spiritual retreat with a yogi guru for a month...
That would be her. That's her story.

Honestly how is it even physically possible take something that huge...i ask that as a virgin . I have always been single but man the idea of having sex with a man sure scares me

the average vaginal canal is around 5" in depth and although arousal can change that and vaginas are soft tissue, this is pretty different from giving birth.
men do typically have more rectal capacity, however, it's a pretty delicate organ overall. people who have specific interest in large insertions are "size queens" and they don't typically jump into things or do minimal prep. prep includes specially formulated highly viscous lube, butt plugs of increasing sizes over several hours, often a change in diet, and often enema rinses (so no one gets shitdick). another note is that the colon isn't straight and there's a large curve just a few inches up. this is often described as uncomfortable, especially with harder members. a bit of suppleness, which is not uncommon for massive dicks bc blood flow, definitely helps. also size queens strongly advise against numbing lubes, as this can result in missing important pain signals, leading to tearing.
additionally, there is a meme that "The average human anus can stretch up to 7 inches. The average racoon, can fit into openings, as small as 4 inches. Therefore, the average human can fit nearly 2 whole racoons up their ass."
personally, i find bottoming uncomfortable enough as it is and prefer topping by far, but especially when it comes to bigus dickus irl? terrifying
its more like horror story tbh