[quote="mominashoe"]Periods will cleanse your uterus of it's lining and all viable sperm that remains. Three or four days before a period is too late in your overall cycle to become pregnant.
A period, except in very rare cases means that you are not pregnant.
But in your case, no, you aren't.
If you have really bad cramps, you can always alleviate the pain with an OTC pain killer like midol or aleve.[/quote
Ok let me clarify, Sperm does NOT enter your uterus when NON fertile. So it does not get cleansed because there is notuhing in your uterus but your uterine lining.....