I've always had totally regular cycles, 28 days on the dot. over the last year, I noticed them going a bit erratic so starting tracking them properly. They're now varying between 21 days (what a joy that was) to the current one which was 35 days. This month has been incredibly light, barely more than a couple of days of spotting really. Is this likely to be perimonopause? I don't have any other symptoms I don't think, although it's hard to tell as I have another illness which causes exhaustion and insomnia anyway. If it is, do I need to see a GP to confirm or anything? I'm 42.