Bleeding

I'm currently 26 weeks and 4 days. Monday I started having increased cramping and some pink bleeding so I called the MD. I went to the hospital where I was monitored, cervix still remains closed, and tested for placental abruption. The US looked ok but the bloodwork showed some fetal cells. They gave me a bag of fluids and discharged me. They scheduled me for another ultrasound but not until next Tuesday! I'm freaking out with that being almost a week away! I'm still having cramps,few and far between, but they are more of a pinching and uncomfortable. The bleeding is still pink but doesn't seem to be turning brown yet. Anyone else going through this or have been through this? Also baby seems to be just as active as before. (Sorry for the long post)