Faint + every month, AF every month, belly GROWING?

I have had several faint positives every month since February, and period arrives 1 day early sometimes 2 days late (regular flow), so I just dismiss them as chemical pregnancies. Now my belly is getting rounder and pointy, feel flutters here and there (like gas). It was as if I woke up one morning (well 3 days ago, actually) and all of a sudden noticed a pregnant looking belly in my mirror (like when I was 5 months preg with my son). My pants still slip on, but I can not even button them. Again today a faint positive, but I am scared to go and see a doctor because I often have a glass of wine with dinner every weekend. Could this be just in my head and my body is playing tricks on me?