Since I've been on xarelto (about 3 months) I have woken up.a number of times dizzy and I can't breathe. It scares me. It doesn't happen during the day. The only thing other that is I take the xalerto at night with my dinner and when I lay down at night I feel dizzy at times in the back of my head. I also am at times dizzy during the day and just explain it away as sinsuses. Does anyone else have similar experiences?