Positive OPK super late in cycle

Em • Wed, Dec 20

I thought my AF was due around Christmas, but yesterday I noticed EWCM, so I took an OPK and it was positive... it’s cycle day 30 for me and my cycle is usually 34-35 days. Is it possible I am ovulating super late this cycle, or what does it mean? I BD last night just in case. Fingers crossed!