Popping in womb when baby moves, very strange feeling!

[mannicmummyhavinaiccy]

Never had this before [ confused] am 39 +2 on dc3 and have a strange popping around baby when she moves around, I can feel it and hear it, dp says he can't hear it and thinks cracking up waiting for labour to start! Never had this other dc. It's almost like she's splashing around in there! Has anyone else had this sensation?

I felt a big pop with my twins and then I gave birth 4 hours later, but I'd had no pops prior to that!

I had this with ds2 [dc2] and dd [dc3]
MW told me it was the 'hindwaters' popping, in one case it was followed by delivery, in the other it was another two or three weeks. Weird feeling.

PS have no idea whether that is a proper term or a midwife-lingo word, nor have I any clue whether it's a sign that labour is going to start. Get checked?