13 dpo & BFNs (ff chart included)

Laura

i have had TONS of creamy CM since i ovulated on CD15. normally i get AF on CD26-28 with cramping the whole day before. yesterday, 12 dpo, i had a glob of yellowish cm that looked like snot. this am, 13 dpo, i had a tiny amount of light brown creamy cm. mid day i had a streak of red blood in my cm. nothing but a bunch of white, creamy cm since. all throughout today, i had a lot of pinching and painful twisting feelings on both sides of my uterus. tender boobs starting today as well. i have been doing HPTs since 10 dpo and have gotten nothing but BFNs. my chart on FF is triphasic and had a possible implantation dip at 7 dpo. my chart is below...http://www.fertilityfriend.com/home/5396e4just wondering if anyone thinks i am pregnant?