the month before last i missed my period. then the next month i had a normal period followed by spotting two weeks after. i was suppose to start 5 days ago but still haven't. i usually have regular periods. me and my fiance always have unprotected sex so i know it's possible for me to be pregnant but is this a sign that i am? i have also been feeling sick at night and my appetite has decreased. people say it could be stress but i'm not stressed about anything or worried. i just want to know so that i can prepare. will someone please let me know what this could be?