It's up to you. Do you feel you are losing too fast? For one thing your male, and most males do lose alot faster then women thanks to less estrogen.

If you fele uncomfortable with your rate of loss, keep upping the carbs with healthy carbs. Since you are still losing, there shouldn't be any harm in upping the carbs more. And yes saggy skin can happen with fast weight loss, along with stretch marks and so on.

Start adding in more moderate carb veggies. Have baked squashes with dinner. Add some carrots into your salads. Also start adding more fruits then just berries. Check out low GI ones (Atkins for Life has nice easy to read tables) and experiment with peaches and cream for dessert. Chop up an apple and add an apple and walnuts to your green salads. Blueberries in salads can also add new tastes.

Start adding in steel cut oats (the kind that takes hours to cook not minutes) for breakfast. Make a pot the day before and just grab quick (you don't seem much of a breakfast person). Also try making smoothies with fruit, protien or what ever else.

Try wasa crackers. They are moderate carb and yummy. Maybe add a small serving of brown rice to dinner (just watch portion sizes and have brown not white)