Help ladies

Dawn

Ladies I need your help. Me and my partner had sex multiple times on the day before I ovulated and the day I ovulated (night at a hotel just happened to be the night I ovulated) 7dpo I was experiencing slight cramping that was on and off (not painful just slightly sore) this lasted until 9dpo, after that I’ve had no cramps at all. since then I’ve been having slight headaches, I’ve been very sleepy, hungry, having a lot of dreams lately, I’m 11dpo now and I’ve got a slight back pain on one side and some pink spotting ...? Help on what this could be.