Hi, I am 34 years old man, I am having a stabling type headache on left side of head for last 5-6 days, i have not show any doctor yet. I am taking sinarest tablet to get relief from this pain , i need at least two tablets per days, I never have this kind of headache ever. After taking sinarest i feel free from pain for nearly 7-8 hours , then again the headache start and it is so painfull that i have to take another tablet. Please suggest me what could have happened is it Sinus or migraine pain ? or something more serious.