Stessin the F Out!!

I'm new to all this so hear me out please. I've going on my second month of not having a period and I'm worried I might be pregnant. I didn't think so the first month because I'm use to irregular cycles and plus the only sex I've been having is oral. Here I am on month two and nothing. I can feel myself slightly cramping and I have other symptoms of indicating that my periods coming but nothing still. Should I be worried? Should I take a test? Should I just chalk it all up to stress??? I'm only in my second year of college. I can't be having no babies😭😭😭😭