Is Pregnancy Possible Through Non-penetrative Sexual Activity?

Hi So my period has always been late, ever since I first got it. It s usually only a few days late but this time it s 5 days ! I wouldn t be worried except my boyfriend rubbed his penis on my vagina and didn t really stick it in. I m worried I m pregant and freaking out. I know I should get a pregnancy test, I ve done hours of research on this whole situation. I was just wondering 1) do you think it s possible I could be pregnant if he only rubbed his penis on my vagina 2) do you think I could be pregnant if he stuck it in just barely. I don t actually think he did but there s a nagging feeling that he did a little, it didn t go in far IF it did because it wouldn t have fit 3) What should I do?!?!?