Am i pregnant? test tomorrow..?

I havn't had any morning sickness but a lil diaherra..my monthly is 18 days late yes i know i need to take a test duha im taking one tomorrow im just wanting some one else's advice i am having body aches and back pains i was on the birth control but i was not aware you have to take them on time i know how dum you don't have to tell me i also missed a couple days but me an my boyfriend have been together since i was 14 yes 7 years this would be my 1st child it will be well taken care of also im a little nervous about this situation