Yes but they never seem to use it
its mostly used a threatening tool towards the asshole tops where the bottom says something like stay away or don't come after me or I'll get rid of this baby lol
it happens in both Love Me Liar and 99.99% Lovers
there is one i can recall off the top of my head where the bottom tries to go through with the abortion but backs out last second and it was Unromantic
Yes.. but they're usually so dangerous that omegas never do it. It always has risks, such as "your pheromone would be unstable, suppressants won't work anymore." etc
don't forget the "u may not be able to have kids again" line
Yes but abortion in ABO universe may have an "anti-angst" effect and so it is generally frowned upon by masochists like us who need angst to survive.
Is abortion a thing in omegaverse