PCOS, 42 , Last period March 30,2017, til April 3,2917- unprotected sex April 10,12,19, May 4,2017 3 hp tests one faint positive, dr office urine test negative, no blood draw, period is almost 2 months late???

Ok I'm a 42 yo female with PCOS and regular periods, my last period was March 30, 2017 it lasted til April 3,2017. I had unprotected sex April 10,12,19 and May 4,2017. I took 3 hp tests of which one was a faint positive could of been evap line. Went to Dr last week had urine negative for pregnancy and sti testing all negative. I'm growing alarmed bc my boobs are bigger and fuller, I'm gaining weight in my belly but a dr office nurse told me I'm not pregnant I haven't seen a dr to feel inside or to have a hcg quant andbqual test I'm worried what's going on????