Vanishing Contractions Anyone!?

37+ weeks and had contractions (Likely BH) starting at 8 min apart @7pm. Uncomfortable but not painful- got kids to bed, took shower, tons of water, laid down for bed and by 11pm they were 5min apart and getting painful but I could still talk through them. An hour later they were still 5 min apart and L&D; told me to come in- THEN THEY TAPERED OFF and now at 7am they have nearly vanished. I feel a random one but way less intense 🙄 Baby #3 and last appt was 80%, 2cm, -2. I thought I had this figured out!!! Anyone, advice???