Hiya I have done this a few times with my BP meds-what I did as I knew I couldn't miss them as even a couple days messes me up was ring my local pharmacy where I usually get the prescription from (as it was a saturday) and explain the situation so they got it organised for me and had it waiting a couple hours later there-I did unfortunately have to pay a little bit because it was an emergency prescription but it was either that or going the whole weekend without.
You can ring your surgery and speak with them and they should be able to get you a temp supply-you aren't the first to do it and they are used to these things happening.hope that helps
