Help could I be pregnant

Shanna • Hello I`m a mother of 2 girls 10 & 7 & my son 2 im fun to be around I have a big heart

I got my period on January 14 th & went off the 18 th and had sex the 19th & the 24 th glow say I was fertile the 25 th to the 30 th with is the day I ovulated the 30 th could I get pregnant my Bestfriend said sperm live for 5 days ?