thanks for sharing your concern.
your history suggest that you have an abscessed tooth which has lead to restricted mouth opening and associated pain.
it is quite possible to have fever
due to infection in your oral cavity.vomiting
is not associated.
in this condition you must visit first to your phyiscian so that he can evaluate you an prescribe you an antibiotic and analgesic
after that once your symptoms are under control,like fever and vomiting then you can give a simultaneous visit to your dentist
donot worry.just get your oral check up done first then you can one by one get treatment done.
based upon priority.meanwhile look for some charity dental camps too that could help you.
do frequent warm saline rinses.
take tab combiflam
for pain every six hourly till you visit your physician or dentist. hope it helps.