10 days late & abdomen is tight.....

Yep. As weird as it sounds, I am 10 days late for my period as of today and for the past 3 or 4 days my lower abdomen has felt a lot tighter than normal and is obviously sticking out more than usual. I sometimes get bloated when AF comes but this is a different feeling.. I've taken multiple tests and they have all been negative. I have had multiple signs that seem to point towards pregnancy but I can't tell if I'm just psyching myself out.

Has anyone else had a tight stomach before finding out they were pregnant???