Confused

Cindy • I'm a stay at home soon to be mom. I'm so excited! We are expecting a beautiful baby girl :-)
Last night after a long day I decided to take a shower and go straight to bed, me thinking I just didn't dry myself correctly I just changed my shirt and went back to bed. This morning I woke up in a puddle, coming from my right side breast. I'm only 17 weeks is it normal? I'm so freaked out cause it's only in one side too