Why do you feel pregnant?
maybe you are pregnant. If you have ever been pregnant before and you feel the same then you should have a test to see if you are. if you have never been pregnant before then you don't really know what feeling pregnant is like, so it could be imagination and stress from worrying about it.
It is possible not to feel that way. As long as you do not experience any bleeding of any sort then you should be fine. You may not "feel" pregnant anymore if your symptoms are going away or you may just be getting used to the feelings/symptoms of being pregnant and are not as noticeable to you anymore.