Trying to conceive for a YEAR and a half...nothing :(

Koda
Like it says on the tin...been trying to conceive for over a year and a half with no results.
My period is a little irregular from years of having a terrible eating disorder (recovered now! 💪🏻) but I can still recognize when I may be ovulating and when my period is going to arrive.
However, still no positive tests for me! I am wondering if maybe the fact that my partner and I have sex in a cowgirl position (size differences suck sometimes 😂) may be discouraging the sperm to go up further?
Or maybe I did damage from my eating disorder? I'm not sure! Opinions, loves? 🤞🏻