If you know you are infected, although there's no cure, there's clear benefits to early treatment. Yes, but if you got infected, the test may not detect it until a few weeks after infection. It can take as little as 2 weeks, or it might take up to 6 months for your body to make enough antibodies. You should continue counseling and testing until you know you are not infected. It really depends.
Some facilities schedule appointments very quickly, and others take a few weeks.
Most publicly funded sites are free or require only a minimum fee. If you go to your doctor for counseling and testing, the cost can vary, ask the cost beforehand. If you or your sex or drug partner have engaged in behaviors that can transmit HIV, you should get counseling and testing. Medical treatment can reduce this to about 1 chance in 12. If you are already pregnant, you should tell your health care provider that you tested positive.