You should wiki how the ELO system works.
Basically you are given a K value which is a measure of how confident the system is in your position. The goal is to place you where you will have a 50/50 chance of winning.
Right now your K value is very high because the season is so new so the system is not sure where you belong. If you go on a losing streak you will drop like a stone, if you go on a winning streak you will rise like a rocket.
This is why near the end of season 2 it was tough to gain more than 8 ELO or so at a time. The system had a pretty good idea of where you belonged. If you watched any of the pros during that time their ratings rarely moved at all because their W/L ratio was close to 50%.