"let it not show"
It is not easy. Many people in China are discriminated like you and in desperation they ask their friends to go to the blood test for them. Not the right thing to do, but that's their way to fight discrimination.
You must not believe everything you hear or read online or elsewhere. Please find trustworthy sources and educate yourself first.
http://www.medhelp.org/health_pages/Hepatitis/HepB-Introduction--Welcome-Page/show/34?cid=153 is an excellent place to start. Talk to your doctors, make sure that whoever is infected is monitored periodically, etc.