My last period started june 19. I have been pretty regular lately. No period in july. Its august 3rd. Yesterday I had sex, then got a red spot on my underwear but when I wiped nothing so I put a pantyliner on and checked it a few hrs later, there was a pinkish spot. This morning I put a pad on just in case and I went for my walk, got a test, but when I got back there were red spots on it. Not like a period my periods are usually so heavy the first day, these were only spots... but the test was neg. I have an appt on the 10th...what do you think?