This morning I had a terrible migraine so bad I called into work

Sometimes headache is caused by neck muscles problems. Try massaging slowly and with a costant pressure your back neck, starting from where the occipital bone ends to the beginning of the collarbone, almost sliding the fingers, from top to bottom and viceversa, while restin your head. It's better if someone else does it though

I think you misread my question. My headache is gone but I now have constipation from the pain relievers. I am familiar with headache treatment options since I get headaches very often and try to only take ibuprofen when it's bad enough that it interferes with daily tasks (so not often.)