Thanks for your query at DoctorSpring.com
I understand your concern
First of all I would like to tell you that you need not worry as your rapid test and 4 rth generation test both are negative. Further testing is needed only for confirmation at 12 weeks
4 r th generation test looks at both antigen and antibody. This should detect anigen/ antibody as early as 10 days of infection.
Rapid tests are antibody tests which are positive around 6 to 10 weeks. In your case it is negative. You can confirm the results with repeat rapid test at 12 weeks mark.
Hope it helps
Feel free to discuss further