28 days cycle. period ends 7/22/14, had sex 7/30/14, saw brown spot 8/4/14, saw cream spot 8/5/ no itching or smell.could it be pregnant or ovulation?

14 days before: as you may know, human ovulation is generally 14 days before next period..roughly 2 wks after last on a 28 day cycle. If your period lasted 5 days, and began on the 17th and you have a 28 to 30 day cycle, then you would probably have ovulated about 8/3. But biology is complex, and you could easily be pregnant, so if its critical info, you should test. Until you know, act as though you were :)