Lots of pressure!

A
I'm 23 wks 2 days pregnant with baby #2 and I've noticed this time around I have alot of lower abdominal pressure..more then with my first pregnancy. Have any of you experienced this? I was also told last visit that I have placenta previa and I'm going next Friday to see if it's moved away from my cervix at all. Could my placenta position be making me feel more pressure?