I can say that I had sharp pains and a heaviness similar to AF around that time too and yes, I was very worried but I now know, there was a major pop about to happen! So it was just like growing pains, I think. I had some yesterday too and I felt reassured that my belly is just stretching. Sometimes it feels a bit like a stitch which I've also read is quite common.

I was desperate to feel movement too but it wasn't until a week and a half ago that I started to really identify the feelings in my belly as the bub moving. Now I feel it every day, like a goldfish swimming around! You just wait Bess, soon you'll be wishing the little bub would settle down in there!