I've had a persistent cold for 5-6 months now. I got diagnosed with tonsillitis 2 weeks ago, finished antibiotics, but the cough, headaches, uncomfortable throat and runny nose has only gotten worse. I cough up phlegm constantly. Once in a while I'll get these sharp stabbing pains in my lower abdomen. I have a feeling there's something wrong with me, but the doctors ignore my "common cold complaint" and send me on my way. I'm sick and tired and frustrated and need answers.