C-section Question

Bree • I`m 27 yrs old and have one son (8). I just had our second. Not sure if we're done or not.
As I laid in bed at 3:30 this morning wide a wake from having to make a potty run. A question popped in my head. "I wonder if I'll have to have another C-section since I already had one?" Well once that popped in there all thoughts of sleep were gone. So do you have to have another C-section after the first? Appease my curiosity so I can come home from work and sleep. Thank you!