what will you do if you are having a csec in few days time and you are down with bad cough or fever? Will it delayed your csec or any side effect etc ?

I had very terrible cough but csec still takes place ... but now, you are also down with fever. High chance your gynae will be against it as it may mean that you are already being attacked by viruses around. It will not be appropriate to perform any surgery until you are well. Please do keep your gynae informed earlier in case they might need to do the necessary.