Hi. Well, there is never a truly safe time in which it is 'fine' to have unprotected sex. You risk pregnancy and std's every time you do so. BUT, the good news is that this is typically for most women a less likely time in which one can get pregnant. Sperm lives for a week, however, it's early enough in your cycle (cycle day 1 is the first day of your period) that the sperm will likely be inactive by ovulation time. Only time will tell but I'd say it is unlikely you conceived so close to the day you started your period. No guarantees. But let's keep our fingers crossed. good lcuk