Could I be pregnant from this?

Patient: Could I be pregnant from licking precum, kissing for 30 seconds, then having a finger licked and rubbed on my labia or inserted into my vagina?

Symptoms: I fooled around on July 5th, 2014.
It has been 4 days since my period should have came.
On day 3 of missed period, my nipples were sore when touched.
The morning of day 4, they seemed to be fine.
The last period I had occurred a week and a half late.