I missed my pill on Thursday and took 2 on Friday then proceeded to have unprotected sex. Now its Tuesday and in experiencing spotting. Is this normal or am I pregnant?

Hate to tell you but you lost two days someplace... its actually Thursday.

You have to wait until you are at least two weeks late for a period before you can take a HPT... anything you do before then is taking wild guesses.

Its always possible because NO form of birth control is 100% effective (except not having sex at all)..