Fear of transmission

[gettinbetr]

I posted this question in my usual forum, ocd, but no one will respond to me.  I swear it is all true.

The most unimaginable thing happened to me.  I was shopping for exercise pants, saw a pair I liked, and bought them.  The next morning I tried them on, they fit, so I just kept them on all day.  As I was trying them on, I slightly noticed a white triangle in the crotch area....sort of what I call a breathing area while exercising.  I didn't examine it, I just noticed it was there in passing.
As I was going to the restroom last night, I noticed a spot on the white area.  It was someone's blood.  I am so mortified and feel so disgustingly nasty now.  I had on underwear so I at least had a barrier.  I threw the pants and my undies in the trash can and took a good shower.
I just pray that I am not at risk for contamination.  I have a fear of contamination and of contaminating others, and this episode is just awful.  I have had issues with hiv fear, rabies fear, staph fear, and on and on.  I don't know why things like this seem to continue to follow me.  I know it soumds so bizarre, but this really happened.  I would like to take them back to the store and sue them, but I know there is no way that I can prove that I was the only one who wore them after purchasing them.

[gettinbetr]

How long should I wait before these things would show up in my blood?  The incidence is now 7 days old.

Thank you so much for responding.

[Dr. Kokil Mathur]

Hi!
I can understand your disgust and fear, and it is quite natural. In all probability you will not suffer from any allergic reaction or STD due to this. However, to be doubly sure, you can go for a complete STD panel for HIV, Chlamydia, gonorrhea, HPV, trichomoniasis etc. In all probability all this will be negative.
Take care!