Intense pain woke me up at night! What was it??

Last night at about 1:30 am I woke to terrible pain in my lower stomach. It felt like tearing or stretching and it hurt so bad! I was moaning and crying in my sleep and that woke my husband and he gently shook me to wake me and that's when I realized the shooting pain! And like I said it was in my lower belly. I am 24w5d today. I was asleep partly on my belly, not laying flat on it. Soon after I awoke it stopped hurting but man,that scared me! This morning when I woke up I was slightly nauseous but other than that ok. I have my monthly Dr apt coming up tomorrow so will def tell her about it but in the meantime can anyone calm me down about what this was? I am a first time mom and my first thoughts were miscarriage...I don't know what else to think! Has this ever happened to u? Comments and thoughts welcome! Thank u!