I had unprotected using the pull out method three days before my period can i be pregnant?

A friend and I had 3 days before my period. It was unprotected and he pulled out before he came. I got my period three days later and it was pinkish red and a normal flow for two days and then turned brown on the third day. It has been a week post and one day post period and i am peeing every 30 minutes and stomach feels strange its bloated and every now and then i feel strange twinges and my feel full. I am also more tired than normal, i am usually a pretty active and energetic person and i only want to sleep. I also dont want foods i normally eat and im craving fruit. I am also more hungry than normal. This period was a shock,I was not expecting it. Could I be pregnant?