I had protected sex on sunday Jan 25th and the condom did not break, and then had it again on Jan 29th, a day before my ovulation day as per my period calendar which is 100% accurate on dates since the past couple months. On Jan29th we had protected sex again and then second time again that day without a condom but he took it out on time and did not come inside me. I still took a Plan B one step pill within 24hours on the day of ovulation. I am now experiencing lower abdominal cramps and urge to urinate and when i do its a little each time and it burns. Are these just side effects or am i pregnant?