I have a feeling

I just have a feeling that something is wrong. I started feeling the baby at 10 wks, I'm 15 wks now and I've not felt any movement for a few days and any distinct movement in longer (felt things but they could've just been gas or whatever) and I started throwing up in the mornings which I haven't done before, I'd just get nauseous. I'm kind of worried and want to get checked.  Is it crazy to schedule a UT just to make sure everything is ok?