pregnant

So I had my period about 2 weeks ago but last night and early morning I started cramping.. then I got really dizzy and nauseous all of a sudden. We use the pull out method but that's all. Last night my husband asked if my boobs were bigger and I said no. Could I be pregnant if we had sex after my period but before ovulating? I have a 1 year old but didn't know I was pregnant for a few weeks after conceiving.