Help?!?!

Amber

I am 17 weeks and some days. This is my first pregnancy. I have cramping on my sides, a pinching and twitching on this inside. It's so intense I see my skin quiver on my sides while I'm cramping and it makes me nauseous. I have been throwing up non stop when this cramping happens. It lasts for about an hour and about 5 times a day. My doctors assistant said as long as I am not bleeding I don't need to be seen. I'm just getting really nervous and scared. I still do not show and I still have never felt the baby so I can't use this for my own peace of mind just yet. Is this normal?! I had NO sickness at all my first trimester.