Short mild cramps?


I'll be 39 weeks tomorrow, I had a stretch and sweep on the 19th and I lost at least some of my mucus plug today. I had a nap and when I woke up I started feeling these very mild period like cramps on my left side, they only last about 5 seconds and have been coming on and off very irregularly. This is my second pregnancy so I remember what contractions feel like and this feels kinda like my very first few mild contractions but they are only on my left side and not regular or getting stronger like last time. Would this be considered Braxton Hicks? Or something else?