Advice?

[LAAR1210]

I began spotting 6 days before my period was due. The spotting began at 8 days past ovulation and lasted 5 days. I say it lasted that long, but truly it only appeared when I wiped- very light pink or brown discharge. Had one day of wearing a panty liner, with a little red spotting on one day. Barely dripped onto panty liner. I'm now one day before my period is due and hpt says negative. I'm not sure what is going on with my body and am really confused. I had tender breast, lower back pains, and odd dull ache in lower abdomen at beginning of spotting. I was sure I was pregnant. Anyone have a similar situation? Could I still be pregnant?