Hi!
The spotting you are describing certainly could be the result of switching the patches. If you were my patient, I would recommend taking another home pregnancy test, and if negative, waiting to see when your cycles will resume.
If you WANT to be pregnant, there is no cause for alarm here--only if you DON'T want to.
Good luck!
Dr B
Its Monday and I have a little red when I wipe but only once. It is so strange for me.