When is it to become a concern?

I’m almost 33 weeks and I am miserable. I wake up hourly to every two hours with cramping either in my back or my stomach. Anytime I walk I feel so much pressure. Since I was 30 weeks I’ve been having cramps and a couple contractions daily, including Braxton Hicks. I just don’t know when I should be concerned or if I even should be, because this didn’t ever happen with my first. My back is constantly aching alongside the occasional cramping. My stomach gets painful cramps if I bend over or walk. Also, my pelvic area hurts to spread my legs or walk. At 31 weeks they said the baby was head down.

Is there anything to be concerned about or is this just normal discomfort?