What is wrong with me?

Okay guys i am 27 years old, have been trying to concieve for about 6 years now. No kids & Never been pregnant. My periods are regular.. Earlier this year i had a period that lasted for 20+ days. I litterally bled for that long but didnt have cramps. The hospital just said it was just an irregular period and prescribed me birth control for 2 weeks to stop the bleeding and control my cycles BUT i didnt end up using the birth control because i am trying for a baby. Anyways, my menstral has came like normal every month.. Besides this month. I am 26 days LATE. My last period started Sept 11th and i took 3 pregnancy tests and they all were NEGATIVE 😢 i need to get freakin pregnant ! I am 27 yrs old and not getting younger and it is really upsetting finding out a friend or family member is expecting their 2nd and 3rd child already and they are younger then me. I just want to be a mother and i just know i would be a wonderful parent if i ever get the chance. I really believe it will never happen. I will live a sad life trying. Ugh someone please give me some advise on what steps i need to take to speed things up here or find out what is going on in my body that is not letting me get pregnant!!