Do I go to the doctor?

So my last period was May 12th. Before that my cycle was about every 35-40 days for about 6 months straight. Currently, it's been 77 days since my last period. We use the withdrawl method (I hate hate hate what birth control does to my body), and I've taken probably 10 different pregnancy tests that have all said negative. I have been feeling really tired, been sensitive to smells, and have been feeling very bloated. It could just be wishful thinking and I'm talking myself into symptoms, but I guess I just don't know what to do. 😔