Positive opk

Ch

Hey mamas, 5.5months postpartum over here and we are ttc again. Have not had my first postpartum period yet. However, I got a positive ovulation test on 11/20, and expected to get my period in about two weeks. However, today (11/27), I’m cramping like beginning period cramps and having pink spotting. Is it possible to get my period only one week after positive OPK? Thanks in advance.

Update 11/28: no cramping or spotting... so confused