Period really late, spotting and positive opk

Asa
My cycle is usually 21-25 days, but today is day 38. Both blood and urine tests indicate I am NOT pregnant. I have been seeing small amount of brown discharge(sorry TMI) for the last couple days and I have been experiencing mild cramps. I took an ovulation test today and it is positive. The last time I had a positive opk was a few days after I had my period. Is it possible for ovulation to occur twice in one cycle? I don't think so, but I could be wrong?