Hi, 13 days back I drank badam milk .there was no opener with seller so he opened with the help of his hand by keeping bottle against a rod and hit the cap from top. Mouth of glass bottle has a (red stains) (do not know whether its blood or paint of the rod )if its blood and assume that person has hiv. I drank it in no time. Is there any possibility of risk of hiv. I am afraid. I hav done hiv test 13 days after drinking badam milk. I got negative. But still I am afraid as hiv has window period of 3 months. I have dental problem.