I'm 36 weeks pregnant and was hoping to change my 3 door Yaris before the birth but didn't get time. I've been given a mamas and papas primo viaggio car seat with a base by a friend (I know it's safe) so I can at least get back from the hospital but am having trouble fitting it (the base doesn't seem to sit very comfortably on the seat). Very reluctant to buy a new seat until we get a new car and we've got other things on our minds at the moment! Any advice? Do you think it will be ok to use the one we've got for the short journey back from hospital, then review our options....?