How many days after the second phfizer vaccine are you completely protected? is it after 7 days, 10 days 14 days or some other number of days?

The best answer I can give you is between 14 and 28 days. Everyone's immune system is different, but the current science on the vaccines is that it can take up to 4 weeks for maximal protection, although many have that already by 14 days. Hope's this helps you, and hang in there a few more weeks if you just got that second dose.

The interim data says you are 80% protect 14 days after your first dose and 90% 14 days after your second dose. https://www.cdc.gov/mmwr/volumes/70/wr/mm7013e3.htm