i am pregnant

i went to see my gp today and she said i would have to go to the hospital for a scan because i have been having slite pain in my stomach but as i am pregnant she has got me worried she said something about eptopic pregnancy and this has got me very scared i would just like to know what other symptons would i have if i was having a eptpoic pregnancy i have had no bleeding and no other pain and i would also like to know if it is normal to have pain if it is your first pregnancy