Could it be Braxton hicks contractions?

Yesterday I started having cramping and lower back pain. The pain would go all the way down in my vagina. There were some times when I had to stop whatever I was doing for a minute. Now I've been feeling the same today. Im 24 almost 25 weeks pregnant. This is my third child but I never felt braxton hicks with my other two. I was induced and never went into labor either so I'm not sure what they feel like. Tonight my lower back hurts really bad. My question is....is all of this normal or should I be worried? And I don't know if it really makes a difference but the more pain I feel, the more active the baby is. I guess tests a good sign.! Any advice please.