Period Question

Okay, so I just need some advice on what I need to do about my weird period. I started Jan 22 and ended on the 28th. Everything was good for about a day then I started spotting and on Feb. 2nd my period started again and ended on the 6th. Now it's the 26th and my period isn't due for another 16 days and I'm on my period again. I switched birth control in January so I know it probably has something to do with it but should it really be like this stopping for a few days then starting again? I know this is long so thank you for reading it!