Honestly Kiko, that really isn't that different, that is well within the realms of normality for many women - infact about half of the female population statistically! I think you've become hyper sensitive to the 'larger side' and have imagined it is far more obvious than it is, your hyperawareness has created (excuse the pun) a bigger issue than there is. I have period water retention pain on one side only, (the larger side) too! I think you need to give your body time to settle, you are very young and said you'd lost a lot of weight recently, things will keep changing through your whole life as your hormones change and glandular tissue can alter with it.....give it some time....You can't see the difference when I put on a bra. Problem is I can phisycally feel the difference