Help!!!

[The Serpent Merchant]

No idea on age. The guy never gave me one but he did say she was around 300 grams. I need to get a scale so I can check for myself but that seems about right.

Well 300 grams means less than 6 months old (except in very rare cases)

As has been said 1 week without eating is nothing to a BP. They can and will go off feed for weeks and sometimes months at a time for no apparent reason.

1. How are you housing this snake?
2. How are you heating the cage?
3. What are your current cage temperatures?
4. How are you measuring temperatures?
5. Does the cage have hides? if so How many and what type?
6. What size/type cage do you have?

Overall your new snake needs time to adjust to his/her new home.

Are you sure you know how to sex a snake? If done improperly not only will you not actually know what the gender is, but you can also easily injure the snake in the process.