A kid would ruin how lifes , how can this of happaned ? what to do ? too young?

im 21 and she is 19 , we have been friends since she was 7 and we have been dating for about 2 years , well im in a band and tour a lot , and im gone for months at a time and she came up to stay with us for a couple of weeks and she was fine at the beginging but then started acting a little strange , shes really good friends with my band as we all have been friends for years and live together , and she is also good friends with the other guys we tour with , she was spending a lot of time with this one guy in our band and when i asked them what was going on she told me nothing , i then found out she was pregant becuase i heared them talking about it one night , he found out cuz he over head her talking to one of her friends on the fone and she made him promise not to tell me , anyways that is not the point , the point is i love her to dealth , she really is the love of my life , i hate going away on tour so much becuase i miss her so much , she makes me feel like a kid , i find myself just looking at her cuz im so amazed i could ever find some one to make me feel this way , i just dont know how this baby is going to fit in , i have been in a band since i was 14 and we got signed last year , we have just made a cd and are touring a lot and our band is finally made it big time , but we have only just started making it , money is not a problem as being in a band brigns in a lot of income and she doesnt work because i pay for her , we have talk about kids but that was about a year ago and we siad we wanted some when she is about 25 ish around then , but not at 19 , she wants to keep the baby and i really dont know how this is going to work out , i told her i would take a brake from the band but she doesnt want that becuse she knows how much it means to me , i really dont understand wht is going to happan ? i dont really want a kid this young and i know she doesnt but she is just to nice to " get rid of it " , i dont wanna sound mean but i really want her to get rid of it but i would never ask her anything like that ? anything advice would be great .......... thanks