Additional info about the spoiler
Also, he will use his weak body as an excuse to delay telling Jinhyeon about him being an omega.
He said to Jinhyeon that he will go to France to get treatment (?) and he will be there for around 2 months?
Im not sure about the exact duration but he said until the end of winter vacation until the end of February (?)
He's not pregnant, he just wants to escape from the situation by saying he'll go to France because they have better doctors/treatment over there (as he has a weak constitution)
Actually, he knows that Jinhyeon is understanding and will accept him as an omega but still, he can't bring himself to tell him that he is an omega, because (maybe) he thought that there will still be disappointment. And he does not want Jinhyeon to force himself to like omegas because of him.
Also, I only used translation to understand the raws, and I am not a korean speaker/reader, so there may be some parts from what I said that are inaccurate.
The recent chapter is until ch. 48 only as it will be on hiatus until the 21st of April.
So on ch. 48. He presented as an omega. And he was sad (very sad) about that. Im kinda frustrated about this since he knows that jinhyeon would still accept him even though he presented as an omega.
I'm not a 100% sure about the translation but from what I understood. He said that Jinhyeon will force himself (?) or pretend to like omegas for him. And he also said that it's obvious that Jinhyeon will say nice things to him, but he doesn't want that.
On the last chapter, he still has not told Jinhyeon about him being an omega, and he is avoiding the topic or something.
Opinion: My take from this is that even though Jinhyeon will accept him, there will be disappointment (he think). I understand that buuut, they should bravely face this together.
Furthermore, It is kind of frustrating. Likeee?? He's so lucky that Jinhyeon will (likely) accept him as an omega, not like the other/s.
***Note: I am not 100% sure with this since I just translated the raws, nevertheless I still got the idea of what the chapter 48 is all about