an AF q

It seems strange to put this question here but probably more strange if I put it in general

Does the flow of your AF change between AF's? I have had AF since about Feb/Mar just before I weaned Jack from bf. The first AF I had was very heavy which was very different from a light/spotting while on bcp. Since then my cycles have been 27-29 days and AF has had a day or two being light and 1 or 2 heavy days, lasting I think about 4/5 days

This time my cycle was 25 days and so far (today is day 3 of AF) it has been really light. Mainly on the loo paper rather than the pad (sorry if TMI) although yesterday was a little heavier. Normally I would need a pad at night but for the last 2 nights probably would have got away without it. I am sure that day 2 or 3 is usually my heavier day

Does this happen to anyone else? I know I sound a bit vague but to be honest I don't usually take much notice, I just get on with it. But this time does seem different. Oh and sorry if TMI!