can someone tell me what happened (meth injection)

[nicnikkinicole]

So I did not weigh how much dope was put in to prepare the shot or watch the person because it was someone I thought I could sincerely trust which I know is really asinine on my part and then this person assisted me on shooting myself up and as soon as it all got into my vein I instantly gasped for my breath twice and coughed and couldn't see straight at all in any way felt dizzy and my jaw and entire body shook profusely and I poured in sweat and I tried to talk and couldn't be understood. I kept trying to tell myself and this person that I'll be ok. I felt like i could go to sleep but i made myself stay awake.We were extremely freaked out all I could think to do was to get in cold water. It felt like my heart was going to stop. Can someone tell me did I overdose or come close or over amp?