<s>[INST] I went to my dentist last week with toothache , he took an xray explained I have an infection under my tooth. He prescribed amoxcillin, which I finished today. All day todayi have had minor toothache but have also had a headache which seems to travel right down to my neck. Isthis to do with the tooth. Toothache is really severe at present. [/INST] hello.. yes..this is most probably due to the tooth infection..antibiotics are not the final treatment ..they are just to control the infection.. u have to take the treatment either root canal treatment/extraction..final treatment will be decided by your dentist.. so look forward for the treatment get it done as soon as possible... hope this is helpfull for you.. have good health..thank you.. </s>