[Question #14110] Hep B concern, toothpaste sharing

 
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3 hours ago
I male recently have protected sex in US with a female Asian sex worker travel from China. This is same event as last thread, we have protected vaginal sex twice and kiss, no oral sex. But she stay at my home, and share my toothpaste, and she mention she injured her gum while brush teeth. I have gum bleeding and sore, and I keep using the same toothpaste for several days now. I am not sure if toothpaste opening could have her blood from her own toothbrush. Recently I also notice I didn’t have immunity for hep B anymore from childhood, it became 9.9 < 10, immunity. After one week of this sex exposure, I start getting hep B vaccine shot again.  Here are the questions:
1.  CDC mention sharing toothbrush could lead to hep B, https://www.cdc.gov/hepatitis-b/prevention/index.html, is sharing toothpaste here carry same risk? Or I can treat it as no risk event?
2. Do I still have immunity if my childhood immunity became 9.9 already, I will take two shoot again, I just finish one shot, do I have immunity now?
3. In the worst case scenario, I get hep B from her. 3.1 Will vaccine influence window period? 3.2 How long is window period and 3.3 what test should I do for hep B? CDC mention 6 months https://www.cdc.gov/hepatitis/php/health-care-outbreak-toolkit/notification-testing-guidance.html
4. I am not sure if you guys on expert on hepatitis, if not let me know, thanks
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2 hours ago
For 1 I guess cdc mention kissing is not concern?