Sinus Medication Solution

I do not have a headache, my face is not tender, but I have a lot of drainage down the back of my throat, I’m stopped up, and I have a productive cough. I can feel the mucus moving around in my lungs when I breath deep.

I had bronchitis about a month ago, took anitbiotics, felt better for two weeks but am now having the same symptoms. Could this be a second round of bronchitis, allergies, or a sinus infection?

I had a pretty bad infection about 3 weeks ago. The headaches went away, but I’ve still had lots of mucus in my nose and throat (sorry!). Yesterday the pain returned, and I need some relief to deal with my 22 month old!
My doctor told me to drink fluids and take Tylenol Cold and Sinus, which hasn’t really helped. I am in my 17th week of pregnancy with my second child. Any suggestions?