How long can most women have before their gets dry?

It seems like I can only have for about 10 minutes before my gets dry and we have to use ky jelly or something. I feel retarded and embared because I have to use it. In the middle of a good ual experience we have to stop because I dry out. What is the normal time limit for most women. Are there any pills I can take besides using lubricants? All the help would be appreciated, thanks :)