So confused please help?

Kristen • Ttc#3. Currently have a 6 year old daughter and 19 month old daughter. Married to my husband may 2014.
Friday I got my positive opk. Today according to ff I am 2dpo. Yesterday's opk was light but today it looks positive again. The dipstick was my 1st positive on Friday. The other are yesterday and today's. What is going on???