Don't know what to do

I'm on Zoloft and it's helping my depression and anxiety to most extents however I cannot orgasm at all or enjoy sex I'm constantly looking at the time waiting for it to be over and I want to enjoy sex with my s/o however I just can't. This is my 3rd anti depressant and I don't know is whether I should stop them so I can enjoy my sex life and help my relationship which is Rocky or stick on it and be stuck in this position