I have 3 new guppie that I got about 1 week ago and when I got them, they were totally healthy and fine. But a couple days ago, one of my guppies was slowing down and won't eat. Today when I got home the guppy was just sitting in the corner hiding and it won't move much. it's stomach is a little bigger. When i searched on google to see if it was okay, all the results said that it could be pregnant.