thats not too much if they were fresh. if they were dry tho, you are a crazy fucker! how in the hell did you get 30 grams down your throat, man?

but don't write off shrooms for 1 bad trip...I have taken them many times, and I have had a couple of trips that could be called 'bad', although I prefer to look at them objectively...if you can wrap your head around the concept, look at them as 'secrets you keep from yourself' and then simply move through the trip until its over. after that, learn from your experiences, and try to avoid similar situations (I find environment has a LOT to do with how well the trip goes).