Spotting middle of cycle?

My cycles have came 27-29 days day before. But also have came 31-33 days before. I’d say average it’s usually 30-32 days! Last month, I believe I was at cycle day 39! My period came a week late. I was due April 15th for my period & it didn’t come until April 22nd… with my periods lasting a week, I didn’t end my April period until about the 28th-29th. So I just ended my period 8-9 days ago!

I am in my fertile window according to the app, but I’ve never had spotting like this before during a cycle!! So this is a first.

Yesterday I went to the bathroom, wiped, and noticed a very light brownish pink spotting. Now this morning I just wiped and this is what was there. ⤵️

I’m also feeling not like period “crampy” but I guess crampy? I feel a little achy inside and my lower back since last night .