I am on Depo Provera and just got a prescription for the patch. I know that in most cases you are supposed to start using the patch the first day of your period, but now that I am on Depo I do not get periods anymore. I really need help trying to figure out when to start using the patch. Has anyone switched from Depo to the pill or patch? How did you do it? I am on Depo Provera and just got a prescription for the patch. I know that in most cases you are supposed to start using the patch the first day of your period, but now that I am on Depo I do not get periods anymore. I really need help trying to figure out when to start using the patch. Has anyone switched from Depo to the pill or patch? How did you do it? **I forgot to add. When I went to my doctor and asked her, she told me to start on the day that I would start my period. Another person told me to start on the day I would go in to get my next shot. When I asked my doctor how should I start since I dont get periods anymore she said to make an estimate. I have not had a period since January and even when I did have periods they were never very normal and ranged from 35-45 days.