She will have what is called a missed period. Where you don't get your period for that month. And if that happens then you should take a pergency test to make sure that she is pregnant.
That would be unlikely to the extreme.
No after a week you are protected.
changes in hormone levels happen in the first week
yes
you really can get pregnant at any given time even if your on your period its rare but can happen...
keep your pants on and it wont happen; 100% if you say the right things; 70 bucks a week if you're workin or not
Nothing. It's safe and you have the same chances as before for keeping it or having a miscarriage.
Yes, smoking is harmful to the baby anytime you are pregnant. So if you are pregnant one week or 9 months.
No clue as to what your questioning is asking,yeah you can have sex and be pregnant in a week,that means your a week pregnant.
It can receive skeletal damage
Well it depends when she started her period and when she ovulated. If she had finished her period is week before you had sex then yes it is very possible she coudl be pregnant.
ask a doctor ;]