I started microgestin about 3 weeks ago and ever since I have noticed my stomach has been really sensitive and I have actually vomited and now that I think back this started a couple days after I started this medication.. I talked to my pharmacist about the side effects but he said that it is possible but not common. I have taken medication for the same purpose but it was different brand and it did not make me sick.. I wake up nauseated and sometimes I can't even eat breakfast it's so bad so I just have to lay back down but sometimes it goes away if I get my mind off of it.. I'm not sure if it is the 1.5 /30 but it says 1.5 at the bottom of the package... And I've never been sensitive to any meds ive taken before. So do you know if this is a common side effect of this medication?