Okay so my period has been spot on time since I started. I am 19 years old & me and my fiancé are not trying to conceive but if it happens it happens. So no we are not using protection, pull out method. What are the chances of me becoming pregnant? Also my period just went from about 26 day cycle to 31 and 34 and now it just went back to 27... Does this just happen as you grow? And can it effect me getting or not getting pregnant?