Lately, I have not been having regular bowel movements for the past 7 days. In fact, I haven't gone at all except for 2 days ago when I woke up to a horrible stomach ache which resulted in vomiting and diarrhea that day, but my sister around that same exact time was experiencing a stomach ache and had vomited too, so I figured I had caught a little bug that day. But lately I've been bloated, extremely tired, my sides feel odd not sore but sensitive I guess you could say, I've been constipated, and my stomach is constantly making these odd noises. Also, my period was due soon, actually a few weeks ago, it's the end of the month now and it still has not come. Could it just be symptoms from that?