What is going on with me!?!

I'm struggling here. This last pregnancy was so different and ever since, I feel like I dont even know my body anymore.

My husband and I finally had sex for the first time just after my last period ended. About a week later I started bleeding. For five days. Like a light period. This was during my predicted ovulation week! I freaked out. I've nvr experienced mid-cycle bleeding in my life. I'm now 3 days late for what my period should have been (today is day 4). I tested this morning and it was negative. Uhhg.

I dont know what to think at this point. Do I count the 5 days of light bleeding during my ovulation as my period!?! AM I late? If I counted that then I shouldn't start until the end of the month but why would I have started my next period so soon?

I dont even know what to do right now. My periods have been fairly regular since they started back up, then this mid-cycle bleeding happened and I'm so confused. Did having sex cause this? It was nearly a week before bleeding.

Uhhg anyone go through this? Are my hormones and body just out of wack after baby? (Even tho I've been pretty regular)

HELP