Ciclosporin tretment

Hi, got my ciclosporin tables this week. Well I was due to get them 4 weeks ago until I find out my GP lost my file and prescription. Any way, got the tables this week, I’m concerned that I haven’t had my blood pressure done before I start taking the tables. Shall I contact the GP and get that done before I take the tables? I’m on a 6 weeks treatment, 2x 150gm. Thanks