Use barrier method(condom) of contraception. And if cycles regular avoid relationship in middle 10 days of cycle.

You can use birth control pills

Try Barrier contraception like condom

Barrier contraception is best for u now. That avoid pregancy and prevent against sexually transmitted disease too. Oral contraceptives pills are also good option U can consult your GYNAECOLOGIST for further evaluation information and treatment. Considering yr cycles regular and the day u start having menses as 1st day, avoid Intercourse from 8-17 day to avoid unwanted pregnancy.