Ok, the tension placed in between the thumb and index finger has never worked for me and i've tried it, had someone else try it and even had a licensed massage therapist try it. Didn't work.
What you might have is a classic case of migraines which is swelling of the blood vessles in the brain, no tension reliever will help that. I too have an ulcer and have frequent migraines. If you get sensitive to light and sound and feel pressure around your eyebrows and feel like your eyes are going to pop out then that is most likely what it is.
I can't take aspirin of any sort. And when I was on an anti-depressant it actually made the headaches 10 times worse. I stopped taking them and they came fewer and farther. The only medication I can take and I can say has 100 percent worked for me was imitrex. Within 7 minutes, my headache was gone. Talk to your doctor and see if migraines could be what you are experiencing.
Take care,
amy