Spotting issues

Megan
Has anyone else experienced spotting between periods after going off birth control?  I start about 6-7 days after my period stops and go until my next period ends. I went to the doctor for it and she said it's probably from going off birth control after being in it for so long. If it continues she wants to put me on estrogen pills. I don't want to do that because it can make it harder to conceive. Any one else have this problem?