Definitely go and get a test, then you will know for sure. Try and do this straight away.
Other than that, I would say go to the doctor as well and take your boyfriend with you. Not saying he would lie to you, but maybe he is more embarrassed and if he has anything might be too scared to say it to you in case he loses you.
Also, if you're under alot of stress it could be late as well so be calm and maybe it will come