Has anyone got experience with these? Ive been on them for almost 3 weeks now, have been fine to start with, noticed i was getting hard lumps like little golf balls where i was injecting, but tonight and a few nights ago they have been extremely painful with me screaming to get needle out. Dont know if its near a damaged area or something? Tonight I bled quite a lot so possibly unlucky and hit something we Shouldn't but it took 3 attempts to do, first was painful as soon as needle went in, second when liquid was going in was unbearable (this is when I bled a lot) and finally got rest of liquid in on other side (all with clean needles), dont know how i'll do them for another month! Has anyone any tips?