Me and my boyfriend had sex 3 days ago 3 days from then he started notcing he had a lump on his penis and its itchy and its hard to pee is it something I could have carried and gave to him and why haven't I felt anything like this and what couls this be?

Sounds like could be herpes? A person can be a "carrier" and themselves not get the symptons... female friend got it from a male partner whom never had symptons... could be vice versa maybe? Please check with your Dr. or if not a Dr.. A public health nurse which any county health dept. has.

THIS IS JUST MY OPINION... I AM NOT A HEALTH CARE PROVIDER...

It sounds like an STD.
Please, have him checked. No sexual contact until the doctors know what it is.