Vomited for the 1st time this pregnancy


So after acute left lower back pain that radiated to my front left side of my belly...& throwing up from the pain...I’m being sent home with a norco & a “call your OB if the pain returns or come in again (ER)” 🙄 the pain caught me off guard but baby is doing good. I was thinking kidney infection but I don’t have any other symptoms & my UA is clean 🤷🏻‍♀️