I had a medical abortion a day ago..im still vomiting and feel dizzy.? am i still pregnant.?

Not likely, but call: Contact or go to the clinic/doctor who performed the procedure. They need to know how you're doing and can either make things right toward recovery and healing or reassure you if these are normal after-effects and you just need to be patient. They can't help if they don't know. Also, this is a hard time - you might want to talk w/ a supportive counselor - they may know one to refer you to. Best!