Feeling like 💩

For anyone else trying to conceive, does it make you feel like complete 💩 when no matter how hard you try or do differently you still don't seem to wind up pregnant. A few years ago I had to have an abortion because of some very bad circumstances and now that I'm trying again and I can't I feel like that's the reason I can't and it's dragging me down loads !! I don't know weather to try a few more times or just go and get tested by the doctor