I was like you Aggie and also went to the hospital because I hadn't had any movement for a whole day, this was soon after my mother died in March and I was convinced the stress had affected the baby, fortunately all was well.
I didn't feel any obvious movements until about 22 weeks Pop and now he just moves all day. It's really amusing, if I put my hand on my stomach, he'll kick or push it, but if my partner does it immediately after me, he goes quiet. I suppose he can distinguish between the two of us already.
It is a worrying time and even now at 39 weeks, I still worry if I feel nothing for a couple of hours. Try to relax and enjoy it all.