Pregnancy scare, TMI. Help me!

So 10 days ago I went to the doctors on July 1st to get on birth control, they did a pregnancy test and it was negative.On 4th of July I started feeling really emotional until yesterday I was feeling emotional I figured because of ovulation. Last night my boyfriend and I had unprotected sex (I'm not on the pill yet till I get my period) but he pulled out both times. While we were having sex it felt like he was hitting something and it felt weird but I ignored it. A few hours later I started cramping more and I'm still cramping, stronger than last night. I'm afraid it may be pregnancy symptoms but 10 days ago my test was negative, we've been careful with sex in the past month since I had my last period and I doubt I would feel symptoms the next day. I need help!