Try this tag ...
Gob through them you might find it
. http://www.mangago.zone/tag/Male%20pregnancy%20/?page=1
Hope it helps ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄
Maybe it was Romantic Joutou?
http://www.mangago.zone/read-manga/romantic_joutou/
Thank you guys for the responses, I will look into them one by one. I also think it had something to do about a flower (sort of like, the flower was the emblem of the family of the seme/uke?) I think at first, the seme really did not like the idea of being married as well (not really sure). Again, thank you very much for the help and I do apologize for the inconvenience I am causing everyone. ╥﹏╥
Maybe this?
http://www.mangago.zone/read-manga/harami_bara/
I may be wrong.
there was this couple that had an arranged marriage and the uke got pregnant. I think it had something to do about family traditions. I am not quite sure but I think it had something to do about a flower (that helped the uke to get pregnant?) I don't remember the title of that manga and I wanted to read it again, seemed like I forgot to bookmark it. It was sort of supernatural type of genre. Please if anyone knows let me know please or reply to this post. Thank you very much in advance! (▰˘◡˘▰)