Help!! Anyone else take Minastrin?

I've been with my boyfriend for 3 years and we both play college ball. I take Minastrin birth control. I have been protected in sex every time, but I missed my period last month. Nothing has went wrong during sex. The information on the pill says I could miss it and that it's normal but I've been eating like crazy. Seriously I'm like a bottomless pit right now. And it's got me worried. I don't know if I'm eating bc me period will start soon or if it's because I'm eating for 2. I don't have room in my life for a baby. We just got a dog together and that's all we can handle right now. If you take this pill please help me. I need some advice.

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