Is this something to verbs going on for?

Ok, I am almost 40 .. off the pill (for almost 4 yrs, husband have vasectomy) . this is and example what is going on.
I had my middle-of-the-road period week formerly xmas.. then go on vacation for 5 days (over xmas, minus husband).. Came home had sex (not rough,and he is not generous..)... and then afternoon later started my spell again.. This is not the first time this has happen.. Could there be something or what? Your body could simply be going through some changes. See how it go next month. If duplicate thing happen you should see your doctor.
Sounds like you are experiencing pre-menopause. See a doctor when you can.