I am three days late for my period and there is a chance I could be pregnant. I'm scared as sometimes I get a feeling in my lower abdomen like I'm going to get my period but it doesn't come. I'm hungry all the time and very moody. I've also been getting splitting headaches and toothaches. I've never had a baby before and I'm not sure what to do. Can someone help? I've always wanted to be a mother..