Help plz!!!!! 😩

Shawnna • I am 39yrs.old live in NYC 🏙 Wife 💍 to the love of my life💗💏😍😘 #librawoman♎️ 10|3🙋🏻‍♀️ My 2 #angelbabies👼🏼👼🏼 in heaven🙏🏻 10|2020🥺9|2021🥺

Earlier this morning I got an positive OPK. Then just few mins ago I went to use the bathroom. And I went to wipe myself & a lil blood was on the tissue. Is it normal to spot during ovulation window???? I’ve been having lower back pain, 1 sided mild pain, mild cramps the past 2 days. I did BD a couple days ago. Do you think it was from that? Or maybe I am overthinking it. Any guesses ladies???? Have you went through this before????