My cycle is changing

My cycle used to be consistently 28 (give or take a day or two) days. My most recent full cycle was 25 days, and the shortest I’ve ever had. it’s been steadily changing by one day in a pattern? 29-28-27-26-25. Will this continue? Will my cycle get shorter? Will it change and get longer? Has anyone had this happen. I’m going to be 30 this year.

I’m wondering if anyone else has had something like this similar happen and if they noticed a change?

TIA 🙂