Thanks for posting your query.
You were having protected sex.
after 5 days of your last contact can not be a manifestation of HIV
. HIV first manifestation of acute infection will occur only after 3-4 weeks not earlier than that.
So it is all because your fear complex and you need not take any medicine. Just ignore the same ,take adequate rest and sleep you will be alright.
If you are worrying too much then go for a DNA PCR test after 3 weeks. Then yo will get cleared about your status.
Get well soon.