O.K. this is going to sound weird but here goes. Use a water pick on the lowest setting. I told you. I get constant ear infections when diving because I get excessive ear wax build up at certain depths. I use peroxide after every dive but it if builds up too much, the old water pick works. Do NOT do this on anything but the most gentle cycle and it helps if you've used the peroxide first to kind of loosen it up. It might take a few trys. If it's sinus drainage, good old sudafed. If it hurts at all, get to the doctor, you might have an infection. Good luck.