With modern tests 3 months is essentially the absolute conclusive point. The chance of a 3 month being incorrect are essentially impossible. 6 weeks is a very strong indication as most people would have developed sufficient antibodies by then. Test again in a few weeks and you will know for sure, but a 6 weeks test is certainly a good sign.
Somehow 1 nurse in Planned Parenthood was saying the test only cover up to 3 months before the test...
is that mean 6 weeks period does not detectable at all?
6 week is over 90 %, chances a 6 week negative turning positive again is very very small, 12/13 is conclusive.