I've had a lump by my bellyboutton and it moves around its been a week now could i have a hernia? i've been constapated too? or pregnancy had neg test

Could be a Hernia: Unclear what you mean by "it moves around". Hernias manifest themselves as bulges that often "yo-yo" in-and-out depending on activity. However, a hernia does not "float" or move from one location to another. I have a simple way for you to get to the bottom of this--please see your primary care doctor or gyne for a formal exam and possible surgical referral. Good luck!