#1) Stop saying "I'm thinking too far ahead". Never hurts to analyse the future moderately. I mean, it will come soon enough.
#2) 125lbs for 5'7" is not FAT?!?!?!?! I love strategically placed fat on a woman

My girlfriend's 5'8 140lbs ish and I think she needs to put on weight! Majority of men I know do not like to see bones on any part of a woman's body (ribs, neck, collar bone....etc)!