I'm 6 days late

What do you all think...So my husband and I have been ttc for over a year and a half now when I stoped taking birth control I had a few periods then they just stopped after not having one for six months I went to the doctor and I was diagnosed with PCOS with that being said they started me on Metformin once I was on it for a month I had my first period then like clock work the next month I started right one time but this month I was suppose to start on the 26th I still haven't started and I've taken 2 test and both come back negative.... I still don't feel like I'm going to start and I want it to be positive so bad.