I would also say test again! the pink could have been implantation.
looks like you should test again! maybe you will get a BFP :) the symptoms sound like pregnancy but you have to test to be sure..
I would take another pregnancy test and make sure to use your first morning urine. Maybe the last time your HCG levels were not high enough to turn the pregnancy test positive. If you get a negative then I would call your MD and they may want to do some blood work like HCG levels or other hormone levels. The pinkish may have been from ovulation. I get that sometimes right before I am ready to ovulate. Good luck and I hope you get your answer soon.
Not all women get sore breasts, each person is different and each pregnancy is different.
If you had a period in July then the spotting and now no period, I would wait until when the spotting started to see if you get a period. You may have just had an off month and had two periods, it's not unheard of. You could take a pregnancy test now if you are late for your period's normal time, I'd suggest First Response or Clear Blue digital, as they're two of the most sensitive. Good luck to you, I hope you get the outcome you're looking for!