my tummy feels and looks different.

i'm 32 weeks today with 5th baby and my mum came to visit today and she said to me that my tummy had dropped. i must admit that my tummy doesn't feel as tight at the top and does feel softer at the top. so baby must have moved down into my pelvis. but for the past few days i have also felt damp and like a trickle sensation down below. this happened in my last pregnancy at 34 weeks but i felt a pop before i realised that it could be my waters and it was discovered that my hind waters had gone and i went into labour at 38 weeks. and this time i have felt nothing like that. i just hope that it's just baby pressing on my bladder.as last time it was said to me that baby may be born early, it was all very scary at the time. i didn't say anything to the midwife on thursday as it wasn't my usual one and i felt i was just worrying over nothing but now i'm not so sure. i have been getting periody pains as well almost like i am going to start my period. any advice please and has anyone else had this at this stage.xx