So what I thought was stress and anxiety, turned out to be very very faint lines on two pregnancy…

So what I thought was stress and anxiety, turned out to be very very faint lines on two pregnancy tests. Severe nausea, bad back pain, and severe aversion to certain food and smells. I have PCOS and have had two miscarriages in the past 3yrs. I was due for my period in 7 days and started early, but all new blood with minor cramps. I'm still showing a faint positive. Is this a period or a last hurrah? Am I still pregnant? I'm new to all this and extremely nervous. Any thoughts?