BPAS early medical abortion

I'm booked in to have an early medical abortion this Thursday and I'm really scared. I'm trying to prepare myself as best I can but can't find any information about how long I could be waiting in the clinic (consultation and treatment are same day). How many hours were you there if you had this done? And I'm really scared about the pain, so I want to try and take the vaginal pills home with me, will the clinic allow this or do I have to try and sneak them out? I'm just coming up 5 weeks but will be having an ultrasound in the clinic.