ok so i usually have my period about the 25-28 th of the month and well it lasts up to at least the 3rd of the next month. i had sex with my fiance' around the 18th ish of december, now his condom keeps slipping off near the end of our intercourse, and we keep thinking " oh shit" because i am not on the pill because of money wise... we do have a 1yr old now and well kinda not ready to have another one. not ready for the swollen ankels, back pains adn the whole big pot belly. i am on a flat belly diet and takeing weight management supplements and colon cleansers together. My fiance' and I have been fight alot late over small things like clothes left on the florr and dishes not done at a certain time or vacuuming hasn't been done yet. I am a stay at home mom and i usually don't get alot of time for my self. could it be stress that my period hasn't come? or the weight loss pills i have been takeing? or is it because of the slippery condom? plz help.