Spotting ?

I had my baby 4 months ago & I’m mostly EBF (with very little occasional formula feedings) this is the first child I mainly BF my other two didn’t take to it so a lot of this is new to me. Anyway lately I’ve been feeling like my period was about to come so I’ve been preparing myself for it lol but yesterday I went to the bathroom & after I was done & wiped there was pink spotting on the toilet paper so I thought “oh great I was right period coming soon) this morning I expected to wake up to a full on period but literally nothing I wiped & nothing toilet paper was clean.. so what could it have been ??? Possible ovulation? I should add I’ve also had mood swings, headaches, cramping mainly on my right side, fatigue (like no tomorrow) & slight cravings. I do plan on taking a test just to be sure but I doubt I would be pregnant since my husband has been pulling out (I know that doesn’t guarantee anything) we don’t have sex that often my sex drive is very low since having baby (like doing it 2-3 times a month low)