can you have unprotected sex and not get pregnant? (like a week after your period)
yes, but it depends on you personally when you are more fertile to prevent pregnancy condoms and birth control are the best way to go. depending on that isnt safe you should take a test, and consult a doctor
you dont always get pregnant from sex, but it does happen. honestly I think that should be the least of your worries. id much rather be pregnant then end up with a disease
yeah its called calendar method search it on google but I think its like 26 days after you period until your next period ends