Im 36 weeks pregnant and stomach feels smaller.?

Ok so I'm 36 weeks pregnant, and my stomach has always felt BIG and hard! Now it feels like squishy! Specially the bottom of my stomach, has this happend to anyone? Is there anything I should worry about? Also I'm not sure if my water has broken or I'm just anxious in my baby being born! But its been twice now that I go to the bathroom and my underwear is wet! Not entirely! But just the middle section! What do I do? I don't want to go to the hospital for nothing!!