Severe headache

For 9 days I have had a headache in the same spot(left side of forehead). I am on nifedipine because I went into pre term labor due to having placenta previa. Tylenol didn’t help, after day six I reached out to my doctor and he told me he thought it was from the nifedipine. He prescribed me a non narcotic medication that consists of caffeine and acetaminophen. That would take the headache away for about 30 to 40 minuets and then I would get a hang over feeling. Yesterday he prescribed me norco. It helped yesterday but I have been crying in pain since 1 am... I am so miserable.

I am almost 35 weeks and if I loose any more blood I have to deliver the baby.

Any tips? What should I do?