Am I pregnant?

i’m a week away from my period, we had unprotected sex multiple times during fertile days (2-3 days before ovulation), a week later now when i wipe i’ve had pink or brown tint on the toilet paper (nothing extreme, mostly pink) only happened for a day or so but not ever time i went to the bathroom. also i never used to get up in the middle of the night to urinate and now i do, i’ve also been getting headaches and very gassy.. please leave your thoughts! google isn’t exactly helping 😅