Had a cold w/ swollen lymph nodes in my neck and lower head with pimple like bumps/rash that are causing pain. I was prescribed Keflex but no progress

If... If you are not responding to the antibiotics prescribed and still feeling sick you should see your doctor again for reevaluation. However, make sure you gave at least 48 hrs for the antibiotics to start working. If not yet 48 hrs you should wait unless you are feeling extremely ill.