Should I feel guilty

So about a week ago I found out I was pregnant. I'm (5 weeks, 2 days to be exact) and just had my first scan and blood tests today. I've always known that if I get pregnant at this young (I'm 19) that I wouldn't keep it, my partner has the same views as me. Simply because we both have other wants and needs before children and being as young as we are it's never been an option for us. So in reality when I found out I didn't feel 'excited' or 'anxious' or anything, but today I went for a scan and it was the craziest feeling, like so surreal, and I really felt so bad about the whole thing and wanting to terminate, but I still don't want to continue on with the pregnancy, why am I feeling like this and should I feel bad about terminating it?