Suggest Treatment For Sore Throat And Sinus Draining

Question : Over the holiday, I began to have signs of a sore throat, so I promptly began gargling with salt water and making sure to prop my head up at night, as I at times have problems with my sinuses draining. When I'd been trying everything I could to get rid of the sore throat but the pain and soreness of it kept getting worse, I went to a doctor a couple days later, fearing I'd caught strep throat. I've had what I was told was just post nasal drip/drainage, (this was diagnosed by an MedExpress Urgentcare doctor, and he gave me a prescription for Claritin D and a liquid steroid I was to take once a day for three days). The pain and swelling of my throat has lessened finally, though I did lose my voice for the most part and am now starting to get it back, but now my sinuses seem to be acting up more, with yellowish green mucus I'm coughing up and blowing my nose frequently. My ears also have the constant feeling that they need to pop or there's cotton in them (mainly the right now at the moment), and my right eye has just in this past hour, started becoming red, and producing a lot of yellowish discharge. Should I go back to another doctor or is there anything I can do or get over the counter that will help, because I'm sick of being sick at this point.

Also, my sinuses seem to hurt when I bend down to pick things up or tie my boots, as well as my upper row of teeth seem to be slightly throbbing as if I have a toothache coming on