Swollen hard forehead from sinus infection, help please?

The rest of my sinus infection is more under control but I still have a forehead that's bigger and hard and it's giving me some memory and concentration problems and nightmares.

It goes softer/down when I put lemon juice on it and the problems also get better. But without the lemon juice for a day or two it comes back and I don't know what to do? The forehead has become worse than the breathing problems

Please help?

I really think you should get this checked out asap by a dr of even better go to the er.

What do you think they'll do?