Depressed..

So I bled really dark just now and I’m sure it was a miscarriage I’m waiting for an appt and I’m just totally stressed because I have classes and my dr said since it’s not heavy I just have to wait for my appt and like I’m terrified like what if it decides to come out during my class hours, I don’t wanna feel like this anymore I’m just gonna postpone getting pregnant again until later on.