I just experienced something weird: there was no strenght in my left leg, and i had to sit down very quickly on the street. Then my left arm was the same. No strenght and feeling as if they were not really mine. After a minute of two i got up and tried to walk,but very insecure,like i couldn t trust my body. Half an hour later both my hands felt very strange, like they belonged to someone else, for about a couple of minutes. I am on fenprocoumon, an anticoagulant because of an artifical heartvalve, for over 30 years , but never had this.