Could this effect my period?

Question

Ive just started a gym class that does cardio conditioning, and we run about half a mile a day, along with volleyball. I've heard a sudden change in daily cardio can effect your period and I'm about a day and a half late. Could this be it? I've only had sex once in the past month, when I was ovulating, but we were safe and pulled out.

Answer

Pulling out isn't safe by any stretch. Yes, sudden changes in physical activity can upset your cycle. You could also be pregnant. You sound like you're in high school (gym class) which means you're fairly young. Don't be another young naive girl...be proactive in your sexual health. Don't use the pullout method. It's not safe and it doesn't protect against STDs. Babies should be the last of your worries when it comes to unprotected sex. Pregnancy comes with options...HIV doesn't.

Could this effect my period?

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