Welcome to 3FC!
First of all it looks like from your weight posted that you've already lost 100 lbs! That is phenomenal! Congratulations! You must've made some great changes to accomplish that.
There are definitely others going through plateaus and struggles, so you aren't alone. But, keep at it, and just like everyone else you will get past it!
There's the 300+ Club for those who've started at more than 300lbs, there's the 100lb Club for those who are looking to lose (or have lost) about 100lbs or more, there are areas based on age and under Diet Central a bunch of sections for specific diets.
Be sure to stick around and post wherever you're comfortable!
Hope to see you around the boards ^^