Should I be worried? Has it happened to anyone and when did you give birth?

I had to go in to OB for a non stress test and the doctor told me I was having contractions. This explains why I wasn’t feeling good, I thought I was just having IBS flare up. I am on antibiotics and she said that it might be irritating my uterus. She just told me that if it continues/ gets more frequent that I should go to the hospital. I’m not super worried because they don’t really hurt and I thought it was just Braxton Hicks contractions. The baby is doing fine. I was just told to stay hydrated and to eat less protein because I have elevated ketones in urine.(I have gestational diabetes so I was eating more protein for the carbs that I can’t eat)

Any tips?advice? Should I be packing my hospital bag?