Hello. I recently shared some herbal tobacco (sort of like marijuana but no THC) out of a glass pipe with a couple of people that I didn't know at a bar. I only took 2 hits from it, but It was dark inside and could not see if there was any blood on the pipe. I had no open wounds or anything in my mouth. 2 weeks afterwards I came down with a bad sore throat and nasal drip. I am extremely worried (not able to eat or sleep). What is my risk of HIV acquisition? I have never injected anything and have been sexually inactive for quite some time. I know this question has been asked on the boards here but mostly involving joints/cigarettes. Thank you so much.