Advice please

amber

I had my period last week and my periods are pretty normal. Today I went out for a day with my best friend and me and her where getting ready to sight up for college. I’ve felt fine all day and I started cramping went to the bathroom and now I’m on my period again.... I NEVER have my periods this close together?? Me and my fiancé had a little fun in bed last night and I felt fine so why should I be starting this close?