Need Your Advice

So my birth control pill pack I am on ended today and I don’t have the next pack with me since I left them at my college dorm. I won’t be able to take the pill for 4 days. I’m seeing my boyfriend when I get back and want to know what I should do if we want to have sex or be sexual. I know he can wear a condom but I’m not sure if that is the only option. Please comment down below for your advice. Thanks!