Help PLEASE !

Ok soooo according to 2 diffrent apps i ovulated yesterday (i also had ewcm).. My husband & i had sex as well (he finished inside me) but i DONT want to get pregnant ! I know i should have been careful but according to him it was to good to pull out 😔 ANYWAYSSSS lol , what are some good emergency methods??? We already have 3 kids & i am nowhere near ready for another one 😖