Is this early labor??

I have felt so off today. I thought it was just gas but I got home tonight and I’ve been contracting so bad. Its shooting straight to my back and my butt. They started off a little lighter but they have gotten much worse. I packed my bag just in case and laid down, and been drinking Water after about 10 minutes of having them and they’ve continued. This has been the span of over an hour. They’ve put me in tears. It’s not absolutely unbearable but they hurt very badly. I’ve having a really bad one as I type this. I am so nervous. I’m only 35 weeks, but I do not want to be the one who goes into the hospital for hours over nothing. I’m just extremely nervous and I’m not ready if it’s time. Help please