So I've been coughing a lot lately, and sometimes I'll get a sensation like my uterus has become tight and hard. No pain at all. It usually goes away fairly quickly, within a few minutes or so. It's almost like I can suddenly feel a bulge in my stomach.

I'm almost 16 weeks... isn't that way too early to feel Braxton Hicks? I have my 3rd OB appointment tomorrow, so I'm planning on asking then, but I just wanted to know if anyone else has experienced something like this so early on? Makes me kind of nervous.