Increase in Braxton Hicks?

32w4d today and I started getting a couple BH contractions at night this past Monday. This weekend our air conditioning went out 🙃 so I've been kinda busy and warmer than usual. It hasn't been dangerously hot or anything but it's been warm... I have been drinking nonstop all day and this evening I had some Braxton hicks maybe once every half an hour to an hour. Way more than I was getting. They aren't uncomfortable or painful, no other symptoms. Just my stomach tightening up.

I have an appointment tomorrow so I'm going to ask but I was just wondering if anyone else is kinda experiencing the same thing or knows more about Braxton hicks. Someone told me they can turn into preterm labor but I'm resting and drinking water, I don't know what else to do 😅