Irritated

So I called after hours nurse at my ob because I was cramping BAD everytime I got up from a sitting position. All she tells me to do is hydrate. HELLO I drink a bottle of water every hour! She asked me if I felt my baby move, which I have since 17 weeks( I'm 22weeks now). Of course I said yes. And she said wow that's really early are you sure it's not gas. These nurses get on my nerves. The water has not helped at all.