Yeah June 7th is to check my progesterone level. I wish my doc would do u/s so we could see exactly what was going on. I would guess that it will be a vaginal u/s. Its no big deal and they should be able to tell you what they see as they are doing it.
I am also on 150mg but I haven't noticed any bad taste. I get them down quickly.
Also my pharmacy always puts the may cause dizziness on my clomid bottles so this is totally normal. The only difference I have noticed on the higher dose is my second day of taking it I had severe pain in my pelvic area. My doc said it could be my body trying to make a follicle. I really hope so! Let us know how your scan goes.