Afraid

Sierra. • Pcos, ttc for 2 years , starting metformin.
So I took a test last thurs it came out positive(never had that ever happen) then on Sunday took another one, came out negitive. I have been so tired and experiencing bad cramps and nausea all the time. I'm afraid that my pcos is either messing with my hcg and not giving a proper reading or I'm not preg . I'm really worried :( I've barley been sleeping or eating cus I can't keep much down.