I'm 19-Yr-Old, In 200 Level, Please How Do I Stop Having Sex?

I'm 19-Yr-Old, In 200 Level, Please How Do I Stop Having Sex?

I am 19, 200Level and I have been dating a guy in my school for about a year. We are really in love and we hope to get married in five years time. We have been having sex at least twice a week since we started dating.
Although we use contraceptives I am really scared of getting pregnant especially because my Mom is a pastor.

I want to stop having sex, at least for now but each time I tell my boyfriend, he says I don’t love him. I don’t want to loose him.