for the first time..need some advice..?

im 15. my boyfriend is 17. (yes, my parents know him & like him a lot) he has had with 4 different girls in the past, while i on the other hand am still a virgin. (yes, he's been tested & he doesnt have any diseases) im not on birth control but im attempting to be..but my parents are very strict (yes, i know they love me & are just trying to protect me..except from ually transmitted diseases obviously..) & if we were to have we would definatly use a condom. we are both highly responsible. ive recently decided that i want to have with him (no, he has never tried to force me or change my mind) but im scared of it hurting..i know that it hurts like hell at first & then in some cases you get used to it so it doesnt hurt as badly after a few minutes or so..but im still scared of it. i dont know exactly what im asking..just that i need some advice. please no lectures though.. ive done pretty much everything except have so im not worried about the bodily fluids & such if you know what i mean..like many other girls are.. i love him & i do trust him..i know that he will take it slow with me & wont hurt me intentionally. i just need to know what to expect..or something like that..please help..thanks.