Please help!?

Jordyn
My last period was when i delivered my daughter on dec 20th 2014 i have yet had a period... Today ive spotted pink tint and mucus sorry tmi... Ive taken tests about a week ago and keep getting faints bfp or negatives...my nipples are tingly and headaches and indegestion... Didnt have period whole month of january please help i go get blood work next week but im impatient. Btw i got a positive opk on 29th january and we baby danced so could i be pregnant?