How do you know if is just brackton hicks or real labor ?. UPDATE*

Sorry girls maybe is silly question but it's my first pregnancy. And I'm in my 3 trimester.

Update:I felt like 3 contractions I'm sure that was brackton hicks because they stopped but they were pretty strong. But thanks for all the answers it really help me !!!

I just tried to be ready because I know that the labor is something that it's going to happen but I kind of scared of that. And also I been feeling a lot of ligament pain, cramps, nausea, etc that before I didn't feel or at least the nausea. The pain around this week is stronger but goes away after a while.