Nervous

Well, just since yesterday the baby has changed her position. I know my tummy looks different, but I'm not sure exactly what the difference is. Yesterday I just thought she was sitting farther back and not right out front. But today I'm wondering if she has dropped. It seems a little soon. I'm only 35wks. Plus, it seems like my body is cleaning itself out for delivery. Last night I also had 2 contractions that were not only in my stomach, but my back as well. And they were quite painful. I never went into labor on my own with Brooklyn or Rilee, so I'm not sure if this is just leading up to labor or what. Please keep me in your prayers. I'm a little nervous about these sudden changes.