mid cycle bleeding

Has anyone had bleeding around 2 weeks after their period (that is very very dark brown) and turns out it was their period and they skipped the next month???
 I'm 1 week late for my period and experienced that bleeding. I was wondering if that might have been my period but just really early and lighter than usual. 
Ps. It was wayy to heavy to be implantation     bleeding. It filled a pad and lasted around 4 -5 days 
Thanks ladies 😘😘😘