Contractions stopped?

I’m 38 weeks with my second and last night started having contractions at 8:30pm. They felt like very intense Braxton hicks and some back pain. They went on for about 3-4 hours while getting closer together (until about every 6 minutes) but they weren’t getting more intense so I figured I’d shower and try to sleep.

Well I woke up this morning and nothing. Getting sporadic Braxton hicks but nothing consistent or painful.

What was that?? I was seriously getting consistent and intense contractions for hours and now nothing? So confused.

Any insight?