Pleaseee help me & answer thiss!!!!?

ive smoked cigarettes i suppose 7 or 8 times..did that seriously increase my risk of cancer? or anything else? did it cause any seruous damage (if you can say) i am otherwise a healthy 13 year old girl..please dont comment about my age..i did all that crap when i thought it was cool. that way of thinking is gone now soo i just wanna know. last time i smoked was i think december 4ish..but i hobestly dont remember..ik it was around then. it was one cigarette. please help me outt. oh a bit of important info is that i didnt really inhale the smoke..i found it more comfortable to just hold the smoke in my mouth for a few seconds. so does that change anything?? oh and if i had ine more would it be bad? bc my friend wants to hang and smoke on monday she doesnt know im kinda done with it but im superrrr tempted. would just one more hurt?