When should you start worrying about pain?

Currently 32+4 weeks and out of town for the holidays. I was woken up at 5 am with back pain, leg pain, and an overall ache that made it very hard to fall back asleep. The back pain went away periodically this morning but it's not back in full force. It's a dull pain in the lower back accompanied with some leg pain and a head ache. I've also had a hard time keeping down liquids and have felt overall sick and huffy.