Suggest Remedy For Constant Headache

Hi,
I have had some really bad headaches for the last 4 days. They are pounding. My allergies have been under control and I don't have sinus pressure. The headaches get worse later in the day and when i get my heartrate up even a little bit i feel a pounding pain. the first dasy it just felt like a slight squeezing in my head but now it feels like a full on headache. I tried tylenol but it did not work.
Years ago i had headaches from grinding my teeth but they were never as consistant as these and I dont know that I have been grinding lately.
I also have a strange problem, when I drink coffee or some other foods, i develop this smell. It smells unpleasant and anything i smell will have an added unpleasant smell to it.
Thanks