at the beginning of this week I experienced a little dizziness, followed by "afterimages" or trailers that have stuck with me until today, now 6 days. They are what I would call mild, but annoying. I went to the eye doc, and he said all was fine. I feel okay otherwise. I am 25, gave birth about 8 months ago. No history of brain problems in family. Have always gotten migraines, as my father and his mother have. Don't want to worry myself to death either. I stopped taking my birth control pills because I called the clinic I go to and they said it would be wise, and to just use condoms for a little while. Could it have been the pills? Ortho tri cyclen lo. I have had breakthrough bleeding, headaches and nausea on them. More recently I have gotten dark patches of skin on my face. The pill warnings do include all of this, and also say that some bad results are dizziness and change in vision. Should I be concerned about a brain tumor or something worse?