Sex and giving birth

Hey ladies! I have an odd but curious question! I have ever only had sex with one guy, and he's going to be my husband in about 6 months. We are planning on our first baby shortly after, I'm wondering if since I've only ever had sex with one person, if that will make birth really traumatic for me. I guess what I'm trying to say is am I more likely to tear since I've only had one sex partner?