Hello, not sure if i had unprotected sex as my bf claims that he didnt put it in. although he did cum outside. after that he cleaned himself and after a few mins later decided to finger me. i am just worried. its been 3 days today. i am worried?

Few minutes and how thoroughly he cleaned his fingers can make a difference. If it was less than ten minutes from ejaculation then then there is a small possibility of introducing sperms in vagina, if more then the sperms were dead. Best is to take BC precaution of your choice to avoid pregnancy and worry if you want to continue worry free sex play