help (:

my boyfriend & i only do oral. but when i give him a handjob i usually wash my hands after because of the cum all over it. also, we were fooling around naked the other day & but nothing was penetrated within, but i'm not sure if pre cum was a factor. i'm 4 days late on my period & usually have a very regular cycle. i have been experiencing cramps a little, but not very many of my normal period symptoms. i'm really worried & i can not support or afford a child right now. any help or advice would be greatly appreciated (: