Help! I have missed my period. And I never have before in my life. It's so strange. I have pain sometimes at night like I'm going to start my period but I don't. I'm very tired all the time and hungry. Also I get dizzy and I am constipated. I feel sometimes like I have gained alot of weight but it might just be from all of these problems. I haven't been dieting, working out hard, or been under stress. I thought I might be pregnant as my husband and I have been using the "pulling out method" for awhile now.