after Missed Cycle

I haven't missed a cycle since I can remember but I have been logging here since October and my cycles have been 30 days. I have been O on cycle day 15 on my opk previously . Last month was strage,  I got my period jan 2-6 and then not again until feb 25th-- a 54 day cycle. I got a "high" on the clear blue digital reader on dec 14th but we went on vacation the next day so I never got a confirmed "positive/peak" so maybe I didn't O that month. I missed my period time and got a positive on the stick opk that was for sure positive on 2/10, which was cycle day 40. then period, like i said, the 25th ( cycle day 54)

I am on cycle day 18 and have been testing  day 13,15,16,17,18 with all negative OPKS with the stick - the digital was too confusing .

Do you think my periods are going to revert back to the previous cycle or that I may be starting to become irregular?

I haven't had any changes in weight, stress or anything like that.

my old obgyn was terrible and from  a clinic and are no help, my new dr cant see me until may so I am seeing what other people are saying. I haven't missed a period before and now that we are ttc it is annoying.

What are other peoples experience?