I know how you feel. Second pregnancy for me too. Try doing Kegels. It helps you get stronger down there to deal with the pressure. And it keeps you from feeling like your insides are going to fall out.
I've been having pain and pressure down there too. Sometimes it's to the point that I feel like my insides are falling out.
I have general pain all the time. Usually if it hurts too much I just have an ice pack down there. I think it's just pressure from the baby pushing down.