Cycle length varies a lot

I guess you could say my average cycle is 28 days but honestly it varies sooo much! It has been as short as 22 days and as long as 37... sometimes it seems like when I have a short cycle month (ex: 25 days) the month right after is long (ex: 35 days). Then maybe it’s 28, 29, 30 for a few month. Then another dramatic shift.

I’m almost 27 years old and I got my first period at age 12. So it’s not like my body is just “getting used to” menstruation lol

Does anyone else experience this? Is it common or is it a sign that there might be something wrong?