About trigger points

Hi!
I was just wondering... I've had some serious trigger points all over my scalenes (side of my neck, above collarbone) and I've been massaging them for a while now. I also have lots of trigger points around my shoulders & arms. A few days back when I once again applied pressure to my scalenes my whole right arm started to tingle all the way down to my fingers and some muscles started to twitch. Now my little finger is a bit numb and my whole arm is quite weak. I sometimes have to help with my other hand with anything that requires lifting and grabbing objects etc. Is this a normal "side effect?" If you have any suggestions, for example which muscles to pay attention to (it takes too long to go through all of the trigger points) or if you know where all of my arm strength went, please, do tell. ;)