I have just recently started taking Ortho Cyclen. I had been on Ortho Tri-Cyclen from November 2005 until February 2008. I had to switch to Ortho Cyclen due to spotting issues. I started my first pack of Ortho Cyclen towards the end of February. I didn't notice any changes, everything seemed the same. The next pack I started, which was towards the end of March brought changes. I usually take my pill at noon. So, I took my pill (the first one of the new pack) and later that night I got a very intense headache in the base of my head on the left side. When I would walk, my teeth felt like they were going to fall out of my head. I went to bed early that night and by 3:00 am I was feeling sick to my stomach. I got up a few times, thinking I had to throw up. About the 4th or 5th time I got up, I threw up. And threw up 3 times in about a 3 hour period. After that I felt fine. Yesterday was my day to start another pack and I was nervous! I got that same type of headache a few days earlier and some Advil took care of it. Last night/early morning at about 4:00 am I started feeling funny and once again threw up. However it was just one time of throwing up this time. Could this just be my body's way of getting used to a new pill???