Brown discharge


Hi ladies so this is my second pregnancy I’m 5 weeks and 2 days and today I have been having cramps all day tonight after dinner I went to the restroom to pee and when I wiped there was brown slightly pink discharge on the toilet paper. Has this happened to anyone I didn’t have anything like this happen with my first baby so I’m scared. I went to the bathroom again and hour after that and no more discharge but still cramping. Also I know this might be tmi but hubby and had sex last night idk if maybe that might of caused it.