The pre cum fluid just got touched near the vagina can I get pregnant? And we had sex on 8th day of menstrual cycle. .

Possibly. Pregnancy is always a possibility. Obtain a home pregnancy test. They usually become positive at about the same time the next expected period. If it's negative, repeat it in a week.
See below. The chances of becoming pregnant with pre-ejaculate are lower than with ejaculate due to the lower concentration of sperm. However, for the most part the pre-ejaculate would need to be transmitted in the vagina for pregnancy. There would be a low risk if semen was transmitted at the opening of the vagina.