Imol helps for dental pain (U should not be asthmatic). take those after food

Hello I think you have to go rct according to your symptoms

You have not mentioned the area in which you have sensitivity to hot and cold .Reason for same can vary.it may be because of cavity, abrasion or gum recession.get it checked. Pain after chewing from one side specially near the ear could be because of jaw dysfunction. You can take any painkiller such as combiflam(sos) for relief

Since pain is there visit dentist at the earliest

You seem to have decay in your tooth which may require a root canal treatment. Temporarily for pain relief you can take tablet Combiflam or dolo 650