my c-section incision is kinda burning for some reason even though i had it 7 yrs ago . is there a…

my c-section incision is kinda burning for some reason even though i had it 7 yrs ago . is there a reason why it should be bothering me all of sudden . i am having another c-section and when i have my sonos every week they do check my incision for some reason so i guess its normal for it to start to bother you when you get to close to the end . i gotta sono tomorrow so while theyre checking it il ask them if its normal for it to be bothering me even though its so old .