Help?

Almost a week ago, six days, me and my boyfriend had unprotected sex twice, once before I took my birth control pill, and once after. The first time he didn't cum in me, the second time he did. I have just started birth control, almost 2 weeks now and I forgot to take it 2 days after we had sex. I've been feeling very nauseous and getting horrible migraines, along with bloatedness and not sleeping very well. Does it sound as though I could possibly be pregnant? Is it to early to assume? Help please!!