Allergic Reaction or Normal

I have read the postings of many users of Sulfameth. I too am taking the TMP DS tab and have many reactions. I received my first shot yesterday morning and took a table in evening. Last night I couldn't sleep, near hallucinations, scratched my self all night and woke up feeling like I had cancer or something. I took another table to follow recommended treatment for possible Staph infection (infected Hair folical). Today I couldn't breath, dizzy and nauseated, tried to sleep with little success. I have a Headache that I've never had before. I have fever and really feel bad. Very dehydrated and drinking lots of water and juice. Is this an allergic reaction or normal.?