So I Got My Period Two Days Ago And It

So I got my period two days ago and it stopped really fast which is unusual to me yesterday I experienced the worst night with extreme Nausea and some hot flashes I'm 16 years old and worried that I may be pregnant though the last time I had unprotected sexual inter course was a little less than two weeks ago and I never do but the condom broke. Am I possibly pregnant or is that not possible considering I got period but it stopped like the second night. Please help