You can only edit your post in the few minutes after you post it. As for that weed, I would try smoking it rather than eating it. Inexperienced cookers (like me) often mess thing up and waste their weed. Don't give up, it took me a few tries before I felt anything.

P.S. How have you been smoking? Joint, bong, pipe or what? If you're rolling joints that might be why. They tend to waste a lot of smoke, while bongs and pipes give you pretty much all the smoke you can get out of it.