I love making love to my boyfriend. We always switch it up when having sex because we can get really into it. Lately when we've been doing doggy style I get this pain in my stomach and I have to stop. It's kinda put a damper on the whole sexual experience and I've also had lower back pain. Should I be worried? Some sites say it's cus of my cervix might be low or something but it's a recent pain it hasn't always been that way.