Start of labor?

Ashley
To start this off I have 2 kids 3 and 4 but was induced with both and when contractions started they were bad right from the start. Well today little girl has been pushing herself down more and now my back is hurting I haven't had any back pains my whole pregnancy till now. When I have the back pains my right side feels like someone is stabbing me. The front of my stomach gets tight not on my sides just the front but it doesn't happen after my back hurts. Its uncomfortable feeling. I wasnt sure if that's her pushing herself out or if that was a contraction. Or if any of it is affiliated with labor cause I have never had back pain with my other two and I don't fully know what to expect whenlabor does start other than water breaking and bad contractions