hiii, Welcome to HCM. Practically in pregnancy or other circumstances,a healthy individual is normally free from any type of STD (detected by VDRL test) and HIV infection. That means both are NON-REACTIVE if individual is not infected by those. You are carrying 21 wks of pregnancy and got REACTIVE result for both VDRL & HIV infection. Normally pregnant women are NON-REACTIVE to these and better for fetal well being and future continuation of pregnancy. As you got REACTIVE,that means you are infected with those infection and need established management specially for HIV. As risk is there to transmission of HIV to your baby via trans placental route. So you do those tests again from well established laboratory and check the result. Then further consult with your doctor. Be well.