What's going on?

Kirsten
Okay so I've been having pregnancy symptoms for the last 3 weeks. I went to get blood work done today for a test.
So while I'm there I get a urine test too. It came back negative. Same with the three at home tests I took. 
I stopped my birth control pills two nights ago just in case I'm pregnant. Well I went pee in the cup and after that I noticed there was blood. My period isn't due until the end of this week and it's always on time. I explained my symptoms to my doctor and she said I could be. I'm not sure what is going on with my body right now. 
Has anyone had this experience?