So I found out last Sunday that I am pregnant. They say I'm about 5 weeks. I've been experiencing some slight cramping but since this is my first pregnancy I decided to head to the er  because it felt a little early to be having cramps and I have hardly any other symptoms. They're short and don't last long. Maybe like a minute at the longest. Some are sharp and some are dull. They did an ultrasound and didn't see anything, and my hCG level is at 388. I get my blood drawn again tomorrow to make sure everything is going up like its supposed to but I'm really nervous! Help!