Incomplete miscarriage

I'm really sad the doctors couldn't do nothing to help my baby, this was my first pregnancy Tuesday I went to the emergency room because I had light bleeding and they said they saw a baby but no heartbeat and then Wednesday I went again because I had heavy bleeding and the doctors had said my hormone level was high which was a good sign and it got my hopes up and was all happy then Sunday I went again because I had cramps that was so sharpe and hurtful that wouldn't stop and I started crying because the pain and so then I took Tylenol but it didn't help so I went to the emergency room Nd they said they just saw a sac and the remaining I hope its a lie and that my baby still in there I'm really sad and I don't want to cry because I don't want my boyfriend or my parents to see me hurting but I'm really hurting I pray and wish that everything is okay and that my baby is still in there and growing