Hello, I am a 25 year old female. Last month i recently started excercising and cut gluten out of my diet. I usually get my period around the 23rd but this month i did no tget it yet and it is already the 5th. i had an annoying pain on my lower left side thinking it could be a cyst because i have had this pain before. Last month i was 3 days late. My boyfriend and i always use condoms.