Me and mii boy had on jan 1st i O on 3-13. he on mii vigina can i be pregnant? any help plz.?

like we had new years eve/day and like he had d on my vigina and like i had to wait and sit there for a while cuz he had to get something i can wipe it off . and like it was really close to the opening of the lips. do you think its really possible to be preggo? its been like three weeks and a day since that day happend so would i already have symptoms? i felt lil minor stuff but idk if its preg symptoms. any info would be really great for a first or maybe not pregnacy. thanks!