falling while pregnant

Should you go to the emergency if you slip and fall while pregnant? I’m 29 weeks and my mom lives on a hill, as I was walking down the hill my flip flops kinda slid and I landed on my butt. There was no trauma to my stomach and I wasn’t in any pain last night. However this morning my right hip has been buckling while walking and feels like it’s about to give out at times. I’m trying to work it out on my yoga ball but is this L&D worthy? Hubby thinks so but I wanted some opinions from mommies. Thanks in advance!