HELP PLEASE

Jialene
Okay so ovulation was May 28 and had sex. But had sex almost every other day the whole month. AF was to suppose to come June 12, but I started spotting June 10 very light only when I wiped. This lasted for about 4 days the second day almost nothing. I took a test the 3rd (June 13) day of spotting and it was bfn then again June 19 and it was a bfn... I'm started to feel very sleepy all the time and my breast & nipples are very very sore. Should I test again with otc tests or go to the doc and get tested????