Do you have a 28-day cycle? If so, you probably ovulated before the condom incident. The egg doesn't last more than a day after ovulation, so you would be fine if you ovulated on schedule in a 28-day cycle. Also, did he ejaculate into the condom, or without? Was it a spermicidal condom? That makes a difference. Early pregnancy symptoms are often identical to PMS symptoms, and they are easy to talk yourself into. Food cravings and sore breasts/nipples are common PMS symptoms. Food cravings in pregnancy don't usually start this early. Also, implantation takes 6-10 days, so you wouldn't normally feel symptoms until your period is almost due.
