Ovulation then period next day

Has anyone ever ovulated and then had a period the next day?? Every time I ovulate I can feel it.. It's either on one side of my body or the other depending on which ovary is releasing an egg.. And I ovulated last week and the very next day I started my period.. How can this happen and is it normal? I did have sex the day before I ovulated and a few days before but there's no way for pregnancy if my period came right after ovulation. Anybody ever had this happen??