There is a chance, pre-ejaculation can still cause pregnant. Pre-ejaculate can have sperm in it.
I've been reading about how pre-*** can have sperm in it'
but is there a big chance of pregnancy even if I rubbed her clit and lips but did not touch the hole at all ?
There is a very, very small chance.
Pre-ejaculatory fluid is created by the bulbourethral glands which are at the very base of the penis just before the prostate. Because they connect directly to the urethra as apposed to connecting to the prostate there is generally no sperm found in the fluid they secret. However rarely sometimes the is a small concentration of sperm but usually this is seen after an extended period of stimulation.
The risk is miniscule and highly unlikely.I wouldn't lose sleep over this.
If you just rubbed the outside you should be fine. Don't worry too much about it. You should find out if she's on birth control, if so, your chance is very unlikely of pregnancy.
They have actually found some cases where pre-ejaculate has a very high concentration of sperm. So your info, although mostly accurate, is not completely true.