Every other day

No matter what I do having sex every other day always seems to stop about 3-5 days before ovulation!! I'm so frustrated I just want to cry!! Been ttc 3 years 2 months & nothing😢 I'm over trying to have a baby that seems like it's never gonna happen...

Note: My cycles are irregular & never know when I'm going to ovulate. Tried ovulation test strips & got tired of buying them.