Has anyone experienced mid cycle spotting and for how long?

I started my period on January 3 and end the 7th. My ovulation day was the 19th and the window started the 14th. I had sex 13th, 16th, 18th and 19th. However I started spotting on the night of 17 and still am as of 23rd. It’s mostly noticeable in morning when I first wake up and then small amounts when I wipe after using the bathroom. I have felt nauseous since Monday 14 off and on, mostly when I work out. I am noticing it’s harder to work out as well. I am suppose to get my period February 1 so it’s still to early for a test.

Anyone experienced similar? Either was or wasn’t pregnant.