I Had An Early Miscarriage At About 4-5 Weeks And

I had an early miscarriage at about 4-5 weeks and just stopped bleeding after about 5-6 days. I saw a blood sac so I'm guessing it wasn't just a late period but that it was a miscarriage. I was cramping really bad and my body hurt so bad. I'm 16 and very active in sports so my question is.. Why do I still feel bloated or sick sometimes? Is this normal and if so how long will it last? Could I be pregnant still??