Yesterday I started to get a headache and I didn't take anything for it and later that night it was about the same so I went to bed and couldn't sleep good and about 5:00 am I started to feel nausea and got sick about 30 min later. I started feeling better after I took something for the headache. The headache went away but the nausea is still there... Do you know what this may be? I had my son 10 weeks ago and while I was pregnant I had a few headaches but nothing like lastnight. Most of the time they will go away without taking anything but not this last time. About 6 weeks ago I had a IUD up in... could it be that making me feel sick?