Im really confused?.. Pregnant women or Mothers help out?

So I just got off of what I think was my period it was light bleeding i had no cramps I get so bloated i feel huge ! My feel more full, I keep farting (LOL i know too much info.) I keep eating like there's no tomorrow. And when i lay on my stomach i feel some pressure on like my stomach I dont know what the specific spot is called but its like on the bottom of my stomach? If that make's any sense.. And I keep gettin like these wierd feeling in my stomach kinda like cramps except it doesn't hurt. Also I keep breathing loud?? Like as if i just excercised and Im really really sleepy all the time? What do you guys think is going on is my body just changing? Im 18 by the way.