Light pink blood when i wipe

My period ended 6 days ago and usually I'll douche 6 days later but yesterday I decided to. The last day of my period me and my husband did have sex we haven't had sex in 3 weeks just because I've been so busy and I just wanted to sleep. So yesterday after I douched and showed an hour later we had sex. At 8 pm I ended up going to the bathroom because I had cramps and when I wiped I had super light pink discharge not on my underwear but on the toilet paper. I thought maybe it was the way we had sex or something. I woke up with the cramps again used the bathroom and again pink blood when I wipe. This never happened before. Any advice?