DordiHomestuck

Omega female as protagonist?
Never seen one in manga/webton :|
Sorry I can't help.

Yes :)

Bite maker?

http://www.mangago.me/read-manga/bite_maker/

There female alpha as side characters tho... I can't remember the title of that bl tho..

Also found this just now,

http://www.mangago.me/read-manga/gokudou_to_omega_mukidashi_no_katsuai/

Is it this? I heard a lot of people say there was like a lesbian couple in it.

http://www.mangago.me/read-manga/pheromone_shower_omegaverse_short_stories/

http://www.mangago.me/read-manga/like_a_tidal_wave_from_pheromone_shower/

Thank you :) I thought that there wasn't many of them. I have just found one before. And now I know about to xD

Following

http://www.mangago.me/read-manga/kanojo_ni_naru_hi/ here's one where he goes from male to female but has a relationship with a male...or did you mean no romance at all?

This one, perhaps?
http://www.mangago.me/read-manga/change_h/
It's a bit of an odd one, but I liked it.

http://www.mangago.me/read-manga/nozomu_nozomi/ no romance, kind of

I am okay whit romance;) bay the way kanojo no naru hi is super good ♡♡♡

It is ! It's definitely on my reread list

Definitely on mine to. :)

Haha how cute :) I felt like there should have had some more chapters, but it was good definitely on my re-read list :)