Instant c*mming for first timers??

If I have sex, will I c*m instantly, and if so, then what do I do!! help!

Hard to say.
Some guys c*m really fast, some guys take a while.

Well do short strokes and rotations instead of just in&out. Also if you feel like you're about to c*m or something. Change positions and it should give you enough time to hold it back for a whole minute or so. Also try a position that is not as pleasurable to you so you might be able to hold it longer.

You can do a couple of exercises to increase your stamina. #1 whenever you mas*urba*e try holding it back then go again and hold it back again. #2 whenever you go to the bathroom start p33ing and then hold it until it stops then start again and hold it back again. If you can hold it back during those exercises then stop it with your hand (squeeze).

well first off you will precum but thats okay its normal, then you might go early you might not, what helps is to just take you mind off of how it feels, think about other things