Cold and weakness for 40days. Cold ever.

I had a angioplasty done 2.5 months back and am on dual platelet therepy (ecosprin 150, prasita 10, concor 1.25g) and cholesterol (rosuvastatin). For Jan 1st I have cold initially it was in chest with coughing, I was given augmentin and allergy_m for 5 days. Then my cheeks had severe pain first left then right.  Went back again. Sinusitis and boils in mouth were detected. I was given allergy tablet. It goes in one place and comes back in another. This week i had bleeding along with mucous. X-ray was within normal limits so I got spray solspree, nasoclear gel, limcee, mucolitis Sr caps. Generally in morning I am ok till 8 am (walk exercise etc) then after that I have lot of mucous which gets cleared. but by evening I feel very weak with burning eyes and nose, feel as though I'll get ulcers in mouth, feverish feeling but temp is normal 78.4) I am wondering if is the sinusitis that is not going away or medicene side effects. I never had such a bad cold ever.