hi:)
it sounds pretty much like your sinuses. i had the same problem when i started diving (it can feel like tooth pain, or pain in the jaw, or somewhere on the forehead near the eyebrows and nose)
if you have it on one day, you can try to suck in salt water through your nose and blow it out again. sometimes this helps, but especially if you have a cold, it'll be hard to get it away immediately.
i got rid of that pain by doing the following:
from time to time i close my nose and do the equalizing thing and hold it that way for 20 seconds. this will widen the eustachian tube and the sinuses by time.
before i go out on a diving trip, i clean my nose and sinuses by using a netipot. from my experience it's best to do this in a shower, as you can lean down your head as far as possible, which will make it easier to clean the sinuses.
these two things helped me pretty much and i almost never have any pain in my sinuses, except when i recently had a cold. there is some nose sprays that will do different things, like widen your sinuses or dissolve whatever is blocking the way.
but nose sprays would be my last choice, as they are usually unhealthy and a few are even addictive..
hope this can help you
safe diving:)
have a nice day