Experiences - Very Bad Trip

[Noodles!]

First some history. I took Hawaiin Baby Woodrose Seeds a few months ago (my first drug experience) and had a pretty bad time, tripping for hours and feeling extremely uncomfortable. More recently I smoked weed, sharing a few spliffs with friends, but all that happened was I felt really happy and tired.

On Friday night a friend and I each smoked a spliff (I think it was skunk) without taking a break. The high hit me pretty fast, at first I felt like I had before, just happy and tired. Then everything started to go into strobe lighting, I found it hard to string words together in my mind and the music we were listening to felt like way to much, though it was Spanish guitar.

The next thing I knew I was laying down, unable to muster the strength to move, so I just laid there. My friend tried talking to me, but I soon slipped out of reality and started to trip real bad, thinking that I was in a strange room and that I couldn't talk to him at all. I started to breathe rapidly, I think I was hyperventilating. I sat up and for a moment came back to reality, where I was shaking and crying, my heart was also beating extremely fast and seemed to hurt.

That was the worst of it, but I kept feeling like I was going to be sick and I kept seeing things which weren't there. The next morning I felt weak but ok, until later in the day when I started to feel jumpy and cry for no reason. It is now Sunday and thought not high I am still finding it hard to talk to people properly.

Can anyone tell me what exactly happened, or if they have experienced anything like this? I found it strange that this hasn't happened before, though i'm kind of new to it, and I wasn't aware this could happen with weed. I was in a comfortable environment with my best friend.