Your midwife should give you your exemption cert at your first appointment. Mine did it online immediately. It’s different to Mat B1
Last pregnancy I asked the pharmacy the same thing and they gave me a form - couldn't say what it was called but it was to come back with when I finally got my matb1. I never got to that point so didn't go back
I got mine at my first appointment
You won't get your maternity certificate (Mat B1) until 20+ weeks. It's really odd because it's usually the thing that gets you free dental care, free prescriptions, free swimming pool in some areas but they don't issue it until quite late in! That said, I picked up a script last week and was fully prepared to pay and they said I didn't have to - my GP knew I was pregnant, the prescription was pregnancy-related and it was somehow already in the system (even though I didn't even have a booking appt yet!) Might be worth reaching out to your GP surgery and asking them what the procedure is where you are :) x