Anterior Placenta & Worried

Kinda freaking out. I'm 15.3wks and for a while there I could feel baby stretching and moving some. Felt like pressure and it was VERY reassuring to me knowing that my baby was in fact alive and well in there. Now I don't feel baby moving anymore and I know that with my placentas placement that is a very large possibility. My baby used to favor my left side and now I can't feel baby there anymore. Someone just please tell me I'm freaking out for no reason. My next Dr appointment isn't till the 30th and I'm trying to be patient. I've had two previous miscarriages back in 2012 and I'm just a worried mom!! We haven't even announced on FB yet because of this fear of mine... This is my ultrasound at 12ish wks and my OB said everything looks perfect but I'm still fearful. Sorry for the long post.