Is this normal?

Hi everyone, this is my second pregnancy (first one ended in miscarriage) and so I'm not sure what's normal and what's not. I'm 17 weeks, and for about a week or so I've been getting pain in my groin area, especially at night when trying to go to sleep. Yesterday and today I started noticing while I'm walking, it hurts worse and my back started aching today when walking and also I was very out of breath. Is this normal? I go see my doctor tomorrow so I'm going to ask her then, just wanted to see if anyone else has these symptoms.