I've beed bad!

I need the carbs, especially for dinner. I hit between 130 and 180 30 minutes after eating. The only reason I check that soon is because I go ride a bike. In 20 minutes that I am on the bike I am down to 75. That is normal but if I dont get more carbs then I am tanking before I even make it back home. I do have a combination of protein and carbs for dinner but those combinations still dont seem to work. I am trying to fix this one and since I am on meds there is no way to predict what will happen with what I eat.

I am confused though with your numbers. I found this chart out from an MD site and according to them 130 2 hours after meals seems to be an ok number. does your doc recommend even lower numbers? If I am at 100 after eating I cant work out because I will tank.

http://www.medicinenet.com/script/main/art.asp?articlekey=17384

On waking up (before breakfast) 80 to 120
Before meals 80 to 120
2 hours after meals 160 or less
At bedtime 100 to 140