Worried something is wrong

I am really worried something is wrong in there. I'm sure everyone gets this. I'll be 14 weeks tomorrow. Next appointment isn't till 4/15. I've been having odd pains in the far left lower side of my uterus (maybe?) and a hard time picking up the heartbeat myself. I can't call the dr until Monday and even then I don't really want to bother them and have them think I'm paranoid (even though I am). I just don't know. I want this baby to be healthy and strong and happy. That's what I wish to myself all day long.