TTC and overwhelmed

I'm here for some advice. I'm feeling so overwhelmed we me and my husband have been TTC actively for over 2 years and with help of fertility medications × 8 months. I've had one miscarriage and multiple negative tests or no ovulation cycles even on the medication. I am at a point where it's so heartbreaking every month. My doctor had told me I have completed the last cycle they will allow of letrozole and I'm not sure how to proceed. I have family and close friends who know we are TTC but I have PCOS and this has been difficult and hearing them say "just keep trying" is beyond irritating to me at this point. I don't know what else to do. IVF will not be an option financially and I just want to give up. Any advice from fellow users who are having difficulty TTC and dealing with loss.