Pink spotting then completely normal? ⬇️⬇️⬇️⬇️

I had some pink spotting a few days ago.. my cycles aren’t like clockwork so glows prediction for ovulation is a few days off.

It was never confirmed with opk but June 19th I’m pretty sure I ovulated by the look of my cm.

June 25th I had Pink spotting that had some old brown blood in it and then nothing the next day. Everything was completely normal.

Only when I wiped. I had a little more after wiping right before rushing to work and I put a tampon in and there was nothing on it.

Are my chances for this being IB good? I’ve been constipated nearly everyday and vomited randomly the day after I spotted and I didn’t wanna psych myself out but AF still hasn’t showed her ugly face... it’s been a week since and I’ve been SO tired, I can’t stop eating and still have extremely bad nausea.