If your doctor is unsympathetic, get a new doctor!
Seriously though, if you are seeing a general GP why not go to an obstetrician for a little help, or call a local maternity health center? GP's have to know a little bit about everything, they are not experts on pregnancy and will not necessarily know the latest or most effective treatments for nausea.

At the very least, go to a female GP or nurse who will empathise with you over this, the last thing you need right now is a clinical attitude.

Kerrie