For the past couple of days, I've been getting an uncomfortable off/on pain (not a bad pain...maybe just discomfort) down around where I think the bottom of my uterus is. Sometimes it goes away right after I empty my bladder. After bothering me when I got up twice to pee last night, it was all gone this morning. Now it's starting to bug me a little, but I have to pee so maybe it'll go away after that. Does this sound like normal discomfort from stuff stretching out in my pelvis/abdomen? (I'm 21 weeks) We are going out of town on Thurs. and I'll be doing a ton of walking; I wouldn't be concerned about it except I'd hate for it to get worse and make me miserable when I'm away from home! Sometimes when I'm on my feet for too long I feel like my uterus starts weighing me down, and I was pretty active this weekend so I thought maybe that's what triggered it.

*ETA* it went away after peeing...maybe my bladder is pressing on stuff when it's full?