Timing contractions

I have an issue. I’ve been having mild regular contractions and my OB told me to time them if they pick up. Problem is, I don’t really feel them. I have a lot of back pain and he told me it’s back labor.

I have no idea how I’m supposed to time something I can’t really feel :/

I need one of those fancy NST machines because that’s how I could see I was having them 😂

My back labor is constant so it doesn’t end. I’m just going to wait until I can’t handle it anymore 😅