No period after chemical ?

Kat

My last actual period was November the 6th I got a positive test on December 2nd started bleeding on December the 7th. I didn’t stop bleeding until the 13th. When am I supposed to get my period? My breast have been burning my app says I was supposed to start on January 6th but I haven’t started yet. I’m just curious as to why I am late. We did have sex in my “ovulation window” but I didn’t think the app would be right considering the miscarriage.