Help help help

Caleigh • mommy of a beautiful baby boy. baby #2 on the way!
Okay. Last night I got up to go take my normal midnight pee. I'm sleepy, it's dark, and I don't turn on the lights. I go pee, but then when I go to wipe, I see some light blood on the tissue paper. I immediately turn the light on and see that it's a mixture of light pink and light brown. 
Throughout the evening and into the night I also experienced some mild cramping. Though it was severe, it was enough for me to fall asleep in an abnormal position to get comfortable. I'm 11 weeks pregnant tomorrow, and I already called my OB and she said there's no reason to be concerned. I continue to go to the restroom and check for bleeding because I'm still having cramping. What's going on? Is my baby okay?