The only things that really helped me was when my Dr. told me about a sinus wash that will kill bacteria.I did this this morning and am going to do it again soon. Sinus infection is very painful and will really respond to this treatment,
you need

distilled water
sea salt
liquid chlorophyll and colloidal silver from the health food store.
in a glass mix 1/4 cup water with a pinch of salt and heat to body temperature.
add 5 drops each silver and chlorophyll and mix.
using a large dropper (like one used for infant medication) drop 2 full droppersfull into one side of the nose while laying down.
Turn the head and let it drain out the other nostril. Be sure to have paper towels handy.
The silver kills the bacteria and there are several hundred kind that can live in the sinus cavities and anti biotics don’t get rid of them all.
Do this twice a day for a week, mixing up the mixture fresh each time.
Then do it once a week for maintenance.
There is nothing in this that will hurt you, and it cured me.
I do not have to take claritin, or antibiotics anymore.
best wishes

I’d take some sinus medicine and just to be on the safe side, avoid alcohol, you shouldn’t mix medicine with it anyways. Foods that are good would be something with caffeine, which constricts the blood vessels and helps relieve headaches, it also helps the body absorb the medicine faster. Also try to eat some spicy or hot foods, if your sinuses are blocked up, it can help make them start running and get rid of that annoying pressure. Hope this helps!
EDIT: Laura L, that is for a sinus infection, sinus headaches are common and easy to get rid of.