PLEASE READ: As a publishing company, we work hard to receive your order, pull products from inventory, prepare the package well for shipping, inform you then take your order to USPS. We are glad to do all that for you. 🙂
But we do not answer thyroid questions (we don’t know about those), nor can we predict how long it will take for your books to arrive (that’s a USPS question). We also can’t be responsible for very rare damage caused by USPS handling of packages, or their failure to deliver. Luckily it’s rare. Please contact USPS about those issues.