hi sounds like you not really over it yet when i had sinus problems it took a few days on some really good meds to get over it always knew when i had coming got real blinding headaches at 11 o/c each day if i bent over felt like the top of my head was coming off. so from what your saying and you have finished your meds get back to your doctor. hope this helps you. good luck
pain behind eye and a stabbing pain in head every now and then. currently getting over a sinus cold. really worried i have a tumor or an anurism