Pressure

So at work today, not even overdoing it, literally just standing around because were slow, I started experiencing a really painful pressure in my uterus. Like it hurt to stand, it hurt to walk, it only helps a little bit to sit or squat.. could that have been Braxton Hicks? I know when I’ve had them before and they can be uncomfortable but these were actually painful, I almost fell down when the pain started. I literally almost crawled to our break room to sit down. I’m 28+4 and I will bring it up to my doctor when I go next week but has anyone experienced something similar?