Woke up, water broke?

So basically i woke up, and felt like my undies were a bit wet? Went to the bathroom, there was a tiny bit of discharge, and patches of wetness around my undies.

I was wearing BLACK undies so i couldnt tell the colour.

There is no odour at all where the patches are?

I dont know if my water broke? Or if it is just a coincidence?

Im waiting for more trickles to come down if it was my water but at the moment nothing is happening.

Im 40weeks today.

Second pregnancy.

First pregnancy my waters didnt break and my plug didnt come out until baby was born so this is all new to me.

Please help me out here!!