Don’t beat yourself up for not purging, You’re much stronger for not doing it. It’s something I regret ever trying because knowing you can is worse than thinking you cant.
Be patient! How long did it take you to lose those few pounds? use other forms of measurements too because just using a scale can be fatal. Measure yourself =] Just a few places I would recomend:
Waist, Above bust, bust, Thighs.
I find they change fairly easily so they’re a great boost =] (dont feel bad if they dont though).
Dont measure yourself obsessively because you wont change like everyday or anything, you should remeasure yourself every 4 weeks. If you’ve been sticking to your diet/exercise there will be a huge difference =]

Good luck! x