 [ Symptoms ] i had protected sex condom never broke i checked periods are irregular and im crampy start around new moon next feb8 boyfriend and i had protected sex condoms had spermicide and i made him pull out when he felt close to climax even with the condom on i have irregular periods weather has been weird and i am stressed i start close to new moons  next one is feb 8th i have been crampy and bloated which i always am before i start my period he was told by his doctor he may have low sperm count or be sterile and he only slipped inside to see how it felt used condom before anything else no pregnancy symptoms [ Disease ] mirena is an effective birth control method that works in two ways hormonal and as an iud basically it is blocking implantation of a fertilized ovum in the uterus it is not a sperm assasin the human body is designed for conception and the female body does not kill sperm sperm live a very short life and will die off in about a week after being deposited in the female genital tract while the enviroment may always be overly welcoming to the invasion of sperm and many will die in their journey the female body does not intend on killing the