I began running a fever late last sunday/early monday. felt worse went to dr. on wed., flu type a positive. completed the tamiflu, still taking the antibiotic for the infection i also had. still running a fever. is this normal? how long should it las

Hard to say: By waiting to Wednesday to be seen/start Tamiflu it likely was of minimal benefit. If started within 48 hrs it works best. If there were another infection (unspecified) the process may also be flu/viral related & abx of little benefit. You don't list how much fever, which matters. I would be worried if over 102 but not so much with 101 or less. Contact your doc if fever high.