I HAD BEEN SUFFERING FROM SEVERE HEADACHES FOR 2 OR 3 DAYS IN A ROW; FELT I WAS SUFFERING FROM A SINUS INFECTION. I TOOK SUDAFED 1 EVERY 12 HOURS. TOOK ALTOGETHER ABOUT 4 THEN STOPPED BECAUSE THE HEADACHES WERE GONE, AND MY NOSE STARTED DRIPPING. SINCE THEN I HAVE SPITTED UP JUNK OF PHLEGM AND LOST MY VOICE, HAD A FEW SWEATS, AND FELT LIKE MY THROAT WAS TOO IRRITATED FROM STRAINING TO TALK AND ALSO A DRY COUGH. I WAS SITTING MY 1 YR 7 MO OLD SON; AND MY DGTR FEARED I HAVE STREP THROAT. I AM ABLE TO TALK A LITTLE NOW BUT KEEP SPITTING UP PHLEGM AND MY THOAT BURNS AND I COUGH. WHAT DO YOU SUPPOSE I AM SUFFERING FROM? SHOULD I HAVE KEPT ON TAKING THE 12 PILL PKG OF SUDAFED. IT APPEARS MY HEADACHES WANT TO RETURN?