I'm scared

I'm scheduled for a d&c Monday morning but I just wiped and saw...you get the jist.. my boyfriend had to go to work (I'm sure he will rush home. 5 min away if anything were to happen) and I'm alone. This my first pregnancy. I only just found out ..mmc..the cruelest thing in existence.

How soon after spotting does the process start naturally?? I only spotted after I used the bathroom.

Edit: spotted brown last night. Still in bed knowing I'll just flow if I get up :( this really sucks.