it could be pregnancy but it could be a lot of other things. it could be stress an illness thyroid problems or a simple lack of the right kind of nutrients. luckily pregnancy tests are easy to get so you can rule that out fairly quickly.
i don't have a regular cycle but i've been feeling more tired than usual weird food wants can't remember anything. could i be pregnant a missed period isn't a sign for me i haven't had a period since january.