OPK??

This cycle is nothing but f*** up.🤣 My cycles are usually 27 days. However my last cycle was 49 days, I had some extremely faint lines then a few days later had a very light short period of 4 days, usually I have 7-8 heavy period. After my period took hpt, negative. So I started opk testing and haven’t stop yet. 🤣 When did I ovulate this cycle? Super confused. I’ve been tracking since September and have always ovulated CD12-14 and a consistent cycle 26-28.