oh you poor thing.
I was exactly like you 8 weeks ago, at 8 weeks.
I went to the GP everyday for 3 days (when i kept down nothing (not even ice) for over 72 hours). Eventually i was admitted to hospital, day 2 i got antisickness tablets, but were no use as i vomited them.
I know how awful you can feel (and have no idea how you are coping with a 2 year old as well)
I too had HG and am still vomiting most days and on anti-sick pills, which my doctors wont prescribe unless really really bad either. It is horrible, but the last 3 weeks or so have been so much better than the previouse 7!
Call Drs NOW and make another emergancy GP appt. Take a urine sample.
Really hope you feel better soon. It is unbelievabley horrible.
If you are still being sick go to drs tomorrow as well, and the next day!
On my 3rd appt (the one where GP called hospital and sent me straight there) I had to deal with a receptionist who was not going to let me have a drs appt, (but would let me have a nurse!)... be persistant, i had to INSIST on my right and need to see a Dr, and tell her my right to see a Dr, ... thankfully i got one eventually (that morning), but it was not easy