Does Breast Soreness And Sickness Indicate Pregnancy?

im not sure if im pregnant. im into my 17th day of my cycle but i want to find out before the 4th of sept because i have a special occasion and want to know if i can drink. Im looking for the best HPT brand that detects the earliest. last week i think i had a few symptoms but im not sure if they were ovulation symptoms. they were: sore breasts, feeling a little sick and i think i may have had a bit of spotting but im not sure