Help please

About 3 months back, I started working out quite intensely. That month, my period was delayed about 2 weeks. I figured it’s due to the working out. Prior to this, my period was always normal, even with light exercise. My next period comes around, 2 days earlier than my predicted date, but that’s still considered normal. That was 25-31 August (last month). I’m now supposedly 3 days +/- past ovulation. Last night I went to use the toilet, after washing and wiping, I had the faintest light pink on my tissue. I thought it was weird, put a panty liner on, went to the movies, came back home, nothing on the liner, just a little bit of discharge. I use the toilet again, and this time, bright red blood. I figured must be my period, even tho no cramps or bloating or anything. This morning I wake up, no blood on my pad, no blood after I use the toilet. It’s just no longer there. If I didn’t take pictures to show my husband, I’d think I dreamt it.

Can anyone shed some insight on what it might be? I did a quick Google, maybe ovulation bleeding? This has never happened to me before so I’m a bit confused, my husband is a bit worried 😅🙈

If it matters, I gave birth 2 years ago to my son, emergency c section.