I'm no guru, but I've lost almost 60 pounds in the past year. I hit several plateaus, and found myself in a similar boat as you on a few occasions. So I'll share what I've learned and what worked for me.
When you've got that much weight to lose, you really can't expect to lose it all at once. Doing so will really depress your metabolism.
It'd probably be a good idea to increase your total calories by adding some more healthy foods and try to maintain your current weight for a few months. You may also want to take a break from your current exercise routine for about a week. Stay active, though. Play some sports, try out some new exercises, do GPP. When you start training again, reduce your cardio so that you're only doing it on days you don't lift. Keep your lifting sessions intense with short rest periods.
You should start to feel better soon, and after a couple of months, you can start thinking about losing weight again. I'd suggest setting a goal to lose another 10 pounds or so, and then reduce your calorie intake by a few hundred and maybe add a little more cardio back in. Once you hit the goal, evaluate how you feel and decide whether to continue losing or switch back to maintance again.
One last thing: make sure your diet's dialed in. I'm not talking about monitoring your calories so much as making sure that you're getting a good mix of healthy foods, including lean meats, fruits, vegetables, nuts, etc. Make sure you're getting lots of protein, but also good fats (if you're not already using flax seed and fish oil, definitely consider them) and moderate carbs.