coffee???

Is drinking coffee really harmful to my baby? I drink one medium cup of regular coffee with cream a day. It is the only thing that has helped with my migraines. Before I was pregnant I got mirgraines constantly and would take Excedrin and that would work. Other wise I would have a migraine for days up to a week at a time! I couldn't even stand or I'd get sick. And yes I was staying hydrated and no sleep didn't help. Tylonal does not work at all so I find it pointless to take. I'm 22 weeks and have done this every day but I see people posting how it's selfish and now I'm worried 😩