Having same problem omg :(
Sex is never safe unless you are monogamous and healthy. You should be using condoms. Blessings - Blu
If you are not on birth control and taking it daily at the same time, I would suggest going and getting Plan B today. It can be taken up to 72 hours following unprotected sex to prevent conception. Some women ovulate as early as day 7-10 of their cycles. March 3rd was the fourth day of your cycle, and sperm can live inside you up to 5 days following intercourse. If you ovulate and there was absolutely no form of protection utilized, you could very well get pregnant.
are you taking any kind of birth control? if you're not I would say it's not safe. because you never know what could happen. I don't know exactly what to tell you. I wish I could help you more but I would definitely say that it's not say because you could probably get pregnant at anytime. a friend of mine got pregnant on her period.