What should I do??

I've been ttc for a year now, I've had 2 miscarriages. I take a ovulation test on days my apps tell me I'm ovulating and when I notice the discharge but I've never once got a positive or even close, but I have regular periods. I struggled with depression and eating disorders but I have completely changed my life around now because I have the most supportive and loving boyfriend around me but we just can not seem to stay pregnant. I know it is only a small chance of getting pregnant but I dont smoke I dont drink i have a good diet and I've been taking folic acid for months now plus other vitamins to help conceive and still nothing I've been to the doctors and mentioned it before but they was useless and didnt even refer they just said keep trying. But it's been a year now and I know I need to go back to the doctors but I'm really scared that I'll be told I cant have kids. It's always been my biggest fear, no one in my family nor my boyfriends have had problems conceiving. I just brought pre seed to try next month. But I just really dont know what to do because my doctors never help me with anything. Should I wait until next month to give me a chance to try pre seed because I've heard wonderful things about it or should I just go to the doctors???