TTC question?

Me and my boyfriend been ttc for over a year. Almost a year and 5 months. we both went to the doctor, blood work, analysis, ultrasound. You name it. the doctor said everything was great and we just have to time it and all this stuff. But it’s not happening and I want to sit and cry. I see a lot of ladies ttc have stuff wrong like ovaries or pcos or vice versa. My doctor said we are perfectly fine, two different doctors. We had sex everyday for like months. Then we tried it every other day. Also, when I have the creamy white mucus which is the most fertile. Then of course, AF just arrives. Advice please? I’m thinking of taking vitamins to help us or something. It’s so frustrating because I really want it and got told we’re okay so why isn’t it coming for! Please help? Any experiences in the same situation??