Help!I had panic attacks in my exam today!:(

Okay so I just had a panic exam in my Biology paper today which led me to leave the exam hall and not finish my paper.So It all began when my teacher said I was put it for higher for unit 2 & 3 exam but it turns out I was put in for foundation instead!And on my timetable it did say foundation but in January it said foundation aswell and I was doing higher.I got 27/50 on my Isa and a C on my last exam cause I only revised a few days before so i wasnt prepared.But this time I was and I was confident in getting hopefully an A but then I got handed the foundation paper and I just stated freaking out!They said that I still need to do the foundation but I learnt higher!I spent all night revising!And that really annoyed me!-.- I got a C in January & suddenly I got panic attacks and I was told I should leave because I felt dizzy and everyone was staring.Will I be able to retake this?And if i can,when?Could I do higher this time?

Okay so I just had a panic exam in my Biology paper today which led me to leave the exam hall and not finish my paper.So It all began when my teacher said I was put it for higher for unit 2 & 3 exam but it turns out I was put in for foundation instead!And on my timetable it did say foundation but in January it said foundation aswell and I was doing higher.I got 27/50 on my Isa and a C on my last exam cause I only revised a few days before so i wasnt prepared.But this time I was and I was confident in getting hopefully an A but then I got handed the foundation paper and I just stated freaking out!They said that I still need to do the foundation but I learnt higher!I spent all night revising!And that really annoyed me!-.- I got a C in January & suddenly I got panic attacks and I was told I should leave because I felt dizzy and everyone was staring.Will I be able to retake this?And if i can,when?Could I do higher this time?