Help!

Okay so I recently got off my period 7 days ago and like I looked at my panties and like there was brownish color discharge or whatever. Like ik that happens but it's been 7 days that my period is over. Like me and this guy i hook up with were gonna have sex. He put the condom on but we didn't fully have sex because I was too tight so he just fingered me and I have him a hand job. Things then go heated and he ended on top of me and tried to put his dick in without no condom but I stopped him and we didn't fuck. Idk if there was any pre cum but ik there wasn't cum. I am educated in sexual activity but I just want to know wtf is going on. Like I have little cramps and stuff and brown discharge. My one close friend said i can feel this was because it's been almost a month since I've been sexual active but here I am like oh no am I pregnant. It's scary ya know. Just please help.