Early contractions

Antoinette
Is anyone else having early contractions? I have Braxton hicks contractions daily and I'm only 20 weeks. They started at 13 weeks. My midwife didn't believe me and thinks I am confusing it with either baby movement or round ligament pain. Most days I am fine but one day I was in the car a lot and I had contractions one after another. I had my 19 week ultrasound the next day and they gave me a transvaginal ultrasound and luckily my cervix was normal and closed. Do you think my body is just getting extra prepared or maybe this is a prediction that I'll give birth early? I am small.