Emily, as Filii says, if after taking all those test you still doubt about the results, do it with a kit. In my opinion, you should talk about with the real baby’s father to see wether if his gonna take responsability or what, but also, you should be very honest with your boyfriend, I know that you love him and that you’re afraid to let him down and obviously you don’t want your relationship to end but be honest, if he really loves you, he will support you all the way and be proud of you for being honest to him.