I just nicked a vein.. Aspirated and everything was normal.. then took the needle out and bloodsquirted out. Then after like 30 seconds started to cough like crazy and then almost fainted and felt like shit for some hours. this happens every now and then but its not usually this bad (like once every 30 injections or sumin) so I was wondering is it potentially harmful in the long run.. If some oil does indeed get into the vein does it cause temporary or permament damage, what am I trying to ask is would this possibly cumulate over the years and end up having caused major damage in the lungs..