bad times on E

I only taken E 4 times. The first 2 times i didnt come up cos i only hada small amount, the third time i cane up and it was a great feelin and i loved it, but when i went to bed at night i hallucinated that my friends were in my room. The fourth time i really fucked up. Iwas pissing everyone off all night, managed to get in a fight and then the next day and night after i was having bad flash backs of the night bu they were distorted. I have always taken alot of alcohol with pills so this could add to my bad experience. Could someone plz tell me there bad experiences on pills as alot of the things on here are good. I am wondering wether it is worth doing them again?