So ive always had a cycle off 28 days since been 11. I've had 3 children. not on birth control as hubby had snip so no need. In june i had 17 days between my period. Pretty annoying as i was on holiday 😒 any way ive been tracking them and they are all different lengths since then. Ive had 26days, 21days, now im 3 weeks late! Defo not preg as not done the deed but seriously confused. Spoke to gp who didn't seem bothered but said they can test but didnt really want to. My older sister went through early meno in her 20s and im concerned i might be following. Any ideas?