During my first trimester I had very few
pregnancy symptoms. At 12 weeks I started experiencing severe headaches, nausea,
vomiting, shortness of breath and rapid pulse rate (100-110). Having a history of migraines, my doctors ordered an MRI and ruled out anything serious.
By 20 weeks the headaches subsided and only came while I was vomiting and lasted for a short time (1/2 hour to an hour). But the nausea and vomiting has increased. Generally I go several days in a row vomiting violently.