Contracting certain times of the day

Katrina

I'm 37.5 weeks pregnant and for a week now I have had a couple hours in the afternoon where I have pretty regular and strong-ish (6 or 7 on a 1-10 pain scale). Then I have a break for a couple hours and then repeat that in the evening.

As of tuesday, I was 50% effaced but not dialated.

Anyone else experience this or similar?