I'm 18 weeks and 4 days and have been having pain in my lower abdomen for two days now. I posted a thread before thinking I might've just pulled a muscle but it doesn't feel like that anymore. The pain is much worse today and is now in my back also. It's so bad it's making me nauseous and I literally feel like crying. I have an appointment today for an ultrasound so I'm going to mention it. Do you think they would be able to see on the ultrasound if I really do have placental abruption?