I am almost 12 weeks

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And I fear my baby's heart has stopped beating.. My morning sickness has disappeared almost completely, my back pain has disappeared, and I'm not as tired as I used to be.. I have a doctors appointment on Tuesday and I'm really scared for bad news... Also the cervical mucus (I believe that is what it is called) I had a lot coming out and now I almost have none... I have had no bleeding, and I do have have constant headaches. And some pain on my right side that comes and goes but that's about it... Pray for us please.. My husband is deployed, and I don't want to give him bad news over the phone....