Hi, I am on seasonale I took morning after pill today (hrs after) should I also take my regular birth control today or skip it and let my period start?

Yes. It sounds like you wanted some extra protection, is that why you took the morning after pill? Or did you miss a few of your seasonale pills. Seasonale should prevent 94-96% of all pregnancies. You might get some spotting after taking the morning after pill, but if it were me, i would just keep taking the seasonale at your normal schedule, as this would also help to prevent spotting.