Should I go to the doctor??

So I've been having a really weird pain deep in my stomach (like right behind my belly button) and it's not like pain I've ever felt before. My family is worried I have a hernia. It feels like a painful "pull" when I walk, bend over, roll over, climb into bed.. pretty much any movement. Now I know it's not a pulled muscle, sore muscle, or upset stomach/cramp.. it's different and so hard to explain. I have to hold my stomach when I walk or do any kind of movement to keep it from hurting and it helps a little bit. It feels like I have to hold "something" in place, if that makes sense?? On a scale of 1-10 I'd rate this pain 3-5. It seems to be worse at night time. It also just varies in general. Should I go see a doctor?? It's been like a week or little over one week