hi.. i had unprotected sex with my fiance on 18th feb,, but taken unwanted 72 for the 1st time within 6 hr,, no side effects occur,, but after 5 days there is itching all over the body,, and there is no withdrawal bleeding till now.. does is necessary to have withdrawal bleeding??? itching is just the side effect or im going to get pregnant ?? my first day of last mensuration was on 31st jan,, and next month expected date on 2nd march