@Sabrinab - You pegged it! Your right styloid is very long & your left one is longer than normal however it has a section of calcified stylohyoid ligament just beyond where it ends which effectually makes it behave like it’s longer than it is.
Unfortunately, it looks like your imaging was done w/o contrast & the picture you sent of your IJVs is not the sort of image that shows IJV compression except maybe to the very trained medical eye. The sort of image I’d need to be able to tell you if I see compression would be something like this:
which came from this discussion:
or this (which is mine):
