Confused needing personal experiences?

So I have been having unprotected sex with my boyfriend for the last month, I fell off birth control this summer and got onto it 2 months ago (I have missed a few pills) he has had sex before but I was the first to make him finish. I ended my period over 2 weeks ago and every day since we have been having sex twice a day, using the pull out method but a few times he thought he finished some in me. The last 2 days I have had pink/brown discharge and some blood. I have been having sever pains in my stomach worse than my period pains, and I've had constant headaches and bloated Ness as well as my stomach has been flipping and making weird noises resulting in me being gassy. I haven't tested yet, I am wondering if anyone has gone through something like this! I'd appreciate any information on this!