My boyfriends mom asked me if we have sex?

I’m 21. It was the first time meeting my boyfriends parents who had come to visit him from abroad. My boyfriends mom asked me if we’re active and told me to be careful to not get pregnant. I felt quite annoyed and I think my boyfriend knows that I am. Should I tel my boyfriend or leave it?

My boyfriends mom asked me if we have sex?
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