Progesterone side effects questions

Last night was my first night where I have to insert Prometrium vaginally. It went fine but I've read about some crazy side effects. Had anyone on here had any from this? Shortly after inserting while just laying in bed trying to sleep I got slightly dizzy but eventually fell asleep. I know that's one of the side effects, but has anyone had any of the major ones, such as the stroke, heart attack or blood clot? I had a blood clot back in 2006 after a surgery but my Dr said he's not concerned about me getting another one on this and I will be fine. That is my biggest concern. Crazy dreams last night too, anyone else ever have crazy dreams on this medication?