Spotting while on the pill

Mo • 💍 virgin till 👰🏽 9/23/2016
I had to change from one pull brand to another due to a switch in my insurance. I remember having a week of spotting right after my period the first month that I started the pill. Now, since switching brands, I have been spotting for a full month. Has anyone experienced this? Any advice on how to stop the spotting?