Pregnancy test! Hopeful but nerves

Sara

So, I took a test 8 days before my period is due, well I got 2 lines, took another one the next day, and another one a day after, well they all came out positive! What are the odds of 3 false positives? My doctors appointment isn't until September 15. I haven't told anyone because if it is a false positive, I dont want to get my hopes up. Any advice?