Confused ??

Jocelyn • Nursing Major BCU'19🐯 #HailWildcats
So I haven't got my period in 23 days and it's kinda weird but normal because my body sometimes misses a month for my period however this time it's a lot different because I'm throwing up, smelling weird stuff and getting nauseous from that and sleeping more frequently. I just don't feel right about this and I'm still just think it might be a normal routine. P.S. I had sex a week after my period was over (May 1 was the last day and I did it on the 8-9) it was unprotected but he pulled out though.. Could it still be a possibility that I could be pregnant??