what do you ladies think?

I just gave birth 4 months ago, this past week I have been experiencing major nausea, vomiting, headaches & heartburn. Went to the dr about 2 days after it started happening he told me migraine. Gave me some meds that haven't helped one bit. Could it be related to having a baby recently? anyone experience this? Helpppp me please I can't handle this feeling anymore.