Confused and anxious. Help!

Zoe
I'm 19. I'm on the Nuva ring because I have pcos. I've never missed a period and normally it is on time. This month it is almost a week late. I've taken two tests and both bfn. I'm not cramping but I've been so tired and nauseous to the point I can't eat. I've had 2 miscarriages already in the past. Please help :(