It is definitely possible, especially if the test was a rapid test (what is typically done) and not a more expensive and time consuming test such as one done by Western Blot or Chemiluminescence. The standard recommendation for confirmatory HIV testing is 9 weeks after suspected infection. Even if your 5 week test is negative, I would strongly encourage you to get tested between 9 and 12 weeks.
Not very likely. If you are getting negative tests and think you are pregnant go to the doctor for a blood test/ultrasound scan.
It is possible to be pregnant and the test negative, but not likely.
Yes. If you are pregnant you will be likely to get a false negative. Most women will test positive with a home pregnancy test at around 3 to 6 weeks of pregnancy.
not very likely
You may have a STD. Go to the doctor
You can test negative on a blood test for upto 10 days after contracting glandular fever. If this should occur with you, go back to your Doctor in 2 weeks for a repeat blood test. If it is negative, you do not have glandular fever.
If you took a test and it was negative you likely didn't ovulate this cycle and may need medication to bring on your period. Consult your physician.
yes
If you haven't had your period yet, there is definitely still a chance of being pregnant. Your hormones change daily and are stronger for most in the morning. Your best bet is to get a blood test. This is accurate and will give you a definite. If you haven't had you period, then I would say most likely you are. GOOD luck!
It can be up to six weeks. The same if you were to miscarry.
A home pregnancy test will show up most probably negative in this case.
It is possible (a false negative test result), but not likely.