Any advice???

Hi ladies. I'm 14 nearly 15 weeks pregnant and still throwing up and feeling constantly nauseous and I just don't know what to do. I've tried ginger, eating little and often, anything you name it.

Because I'm throwing up so much I'm trying to drink plenty of water (always an issue for me as I'm never thirst and sometimes drinking makes me vomit more) and I seem to have a constant headache. I am at a total loss as what to do and just hoping someone would have any advice for me??

Thanks in advance :)