am I overreacting?

I've been having stomach tightening, pelvic pressure, and cramps since 5pm and it's now almost 9. I called my labor and delivery and they said to take a warm bath,  drink water and lay down on my left side; if it's not better in 2 hours come in. It's been 2 hours and the lower back pain isn't as bad but everything else is the same. I don't want to go and it be nothing... am I overreacting? Or should I go in?