:yeahthat:

absolutely write yourself a list of things you want to ask. And remember that there is absolutely nothing that you could possibly ask that they haven't heard a thousand times before.

As for what it could be - not sure - but at 15 weeks bubs is sort of like a goldfish in one of those plastic bags that you take home from the pet shop. They can bounce against the edge of the bag and you may feel it but it shouldn't be causing pain.