Confused!

Nicole

I had my period on the 11th then on the 23rd I got 2 days of bleeding like a mini period. I had sex on the 16th and that’s when I ovulated. I thought it could of been implantation bleeding. I’ve done a few pregnancy tests all negative but still have tender breasts. Any one recommend when I should retest or had this happen to them before and explain what it could be?