No AF since June but still BFN

Feeling confused with my body At the moment, since stopped taking my pill last December my periods regulated about march and was on time until June when came on like normal and now 3 months later still no AF, I've taken a couple of tests all BFN, went to the doctors to discuss and all said was do test( also bfn) n wait to come on , which I still haven't! I've had really  sensitive boobs on n off the last month, was sick for no reason couple weeks ago, and a couple of other symptoms of pregnancy but not sure if they are all psychological because me and my fiancé want a little one so much! Any advice ladies!