I am 44 years old. There has been a change in my periods for past 3 years. It occurs around on every 25 th day. It does start but it doesn't flow till some 3 or 4 days. All these 3 beginning days it's very slight and slimy. Not in a liquid shape. 4 th day onwards it goes normal. 2 days considerable flow and next two days trivial. Suggest me on this please M done with all gynec tests recent which reads all normal results. M with no other health issues too.