Has it really happened?

I have been TTC for 5 months, my period was a couple of days late so did a test and got 2 lines indicating a positive. I bought a clear blue and it came up pregnant 1-2 weeks. I went to the doctors today beaming and he said its 'likely' I am pregnant and will send a pee sample to the lab and I will get my result monday. This put a dampener on my elated happiness now im doubting the result. I did another test today also and it came up with 2 lines again. Iv done two regular tests and a clear blue and all say im pregnant, could they be wrong?