headaches

I don't know what to do about these headaches..my dr told me it's normal especially in the 1st trimester but I'm having a hard time functioning at work. The dr said to keep drinking coffee to help so I only drink 8oz or less once a day. I read about a cold wash cloth on my forehead but I can't do they at work lol any suggestions? The coffee helps a little but just got a short time

Ps I'm not complaining about being pregnant, I'm completely thrilled and will take these headaches all day everyday. Just looking for anything that might ease them a smidge :)