What's going on

Hi everyone, maybe you had same experience and could help me

My husband and I had sex ( whole week ) before while and after ovulation

2-3 days after my ovulation I start having period symptoms ( lower back pain and my tummy was hurting ) like a day before my period stomach pain is gone but my back is still hurting like heavy pressure and I have extremely mood swings I freak out so quickly it's insane and I am tired

Never had period symptoms 11 days before my period

Maybe a day or 2 earlier but not that far ahead

Any one who had or has the same experience