Prego or not?.Help out please.?

So Heres The Story Me and my boyfriend had sex at Around 11 it was dark but so he bust den he threw tha condom(trojan ecstacy)and we did it outside.but itold hem to look for it and then he trew it over the fence to go in the house to put water on it to see if it had a hole.but my vigina was driping but it had lube nd like iwasnt dry.he said there was a hole when i was walking home but he put water pressure on it and can it break from water pressure?.&&so i took the plan b pill as soon as i could get it. But it was like 38 hours later so wood istill be prego?.And we did it at 11:40 4/12/11 nd itook the pill at 5:20pm