Hi Gurneet,
If you do a Category search here for 'smear' you will find a similar question titled 'medical matter' that several of us answered recently. The answers were all well rated by the recipient and so you might find them equally reassuring. If this is your first time, then tell that to the nurse and ask her to explain what she is going to do - you should find the nurse more than willing to help you relax.
The procedure is very simple, there should be little or no pain and it really is preventitive medicine at its best. Please go regularly, please try to relax and please encourage women you know to attend. You really will wonder what you were worried about and it takes 10 minutes maximum. Good luck!
P.S. If the search doesn't work - here's a link to the answers
question 22689