Pressure and ultra sound

Amy • Mother of 3 Beautiful Children, 1 step daughter and My Angel Baby I miscarried in Feb 2015!
2 questions: num 1: is it normal to feel pressure in ur lower abdomen in early pregnacy, I'm 5 weeks and just miscarried 5 months ago plus had 2 csections years ago. Num 2: I have ultra sound tomarrow what should I expect to see and what to expect futon it all together?