I cant tell whats the sinus infection and whats from the DOXY too...

That's no sinus infection. Stop taking the Doxy!

sounds like you made the same mistake I did with doxy. You are not supposed to take it before bed because it can stick in your esophagus (especially capsules) and burn the living crap out of it. That's why they say to take it with a full glass of water, to make sure it gets all the way down. Then you are not supposed to lie down for some time- I've read anywhere from 30 minutes to 2 hours. I did this to myself Tuesday night, and since have been to the ER, in incredible pain, cannot eat anything except baby food in 1/4 cup quantities. My throat is on fire and I am acutely aware of post nasal drip so am taking a decongestant to thin secretions. I am so weak now, it's getting scary. I'd say from experience (not a doc) it's the doxy taken "last night".