I'm pregnant!!!

So for 5 days now I have not been able to eat anything and keep it down when getting real dizzy when I get up from a sitting position to a standing position I took a home pregnancy test and there was a light faded line I went to the hospital and they did blood work and I am 3 weeks pregnant my due date is September 15th I am a little excited but a little upset I definitely was not trying to have a baby I have been having a lot of problems with my relationship