Anyone else have this problem?

Bridget • Expecting our second baby!
I am 15 weeks, and have had minor morning sickness since the beginning. It's worse now. Wednesday I was in emergency for throwing up I needed iv fluids for being dehydrated. Felt sleepy but relaxed all day Thursday and didn't throw up. Friday I started my normal routine again and eating routine and threw up everything from that day around three in the afternoon. The Same thing happened tonight.  I also have a bloody nose. Is this urgent? What am I doing wrong? I am sipping water and eating saltines. I will follow up with physician/ob Monday. I am so scared I am not able to enjoy this pregnancy. What would you do?