Braxton Hicks contractions?

I am 39 weeks + 3 days now. I stayed up last night because there was reduced movement, so nurse over the phone told me to have a proper meal at 1am and slept on my left side to count kicks for the next 2 hours. Thank God she did kick for 6 times.

Then I started to have contractions at 3am for an hour. Each one lasts 45 seconds and 2.5 minutes apart. They were gone after I sat on the birth ball and listened to relaxing music. Is this normal or weird?