chances? HELP STRESSING LIKE CRAZYY!

So I was with a guy yesterday and I gave him head and he barley fingered me and then he put it in raw but only like 3-4 times and then I made him stop because I'm not on birth control. I ended up leaving his house and he never finished at all. I keep stressing out even though all my friends tell me there's no chance I could be pregnant because he did not cum in me especially cause he didn't cum at all. I texted him telling him how worried I was and he said he did not even precum at all that he never cummed or precummed. So I guess that helped out but I was thinking of taking a plan b but I don't want to take one unless I know I have a chance(which is slim). I am not fertile I but I will be in 2 days so. Please helo