I was on a seven day script of biaxin for sinus infection and on ...

I was on a seven day script of biaxin for sinus infection and on 3rd day became very nauseous with diarrhea so proceeded to take gravol. I fell asleep quickly but awoke a couple hrs later with extreme shakes and what felt like little body convulsions/muscles tensing up and spasming. I felt absolutely terrible! I brushed it off as side affects from meds and having flu. However on day 6 of biaxin, I was vomiting once again and took another dose of gravol and fell asleep. Once again, I awoke a couple of hrs later with the same shaky feeling and little body convulsions. That was last night...today I feel terrible and my muscles will not stop tensing up and spasming. I am convinced it is from mixing the 2 drugs.