Get small itchy bumps along small cuts, take weeks to heal?

a few months ago I scratched my middle finger on some keys, it didn't bleed, but the skin was torn in a few places, instead of healing I got these small itchy bumps along the cut, it took weeks for this to clear up. A few days ago I scratched my thumb on the edge of a table, the same general kind of cut, no bleeding, just torn skin, the area now has about a dozen small bumps where the cut was. Almost all cuts take much longer to heal than the average person should, and I get infections very easily. A doctor told my mom when I was younger that the bacteria on my skin is more excessive than normal. Do I need to consult a doctor about these bumps? or is this just something that happens, and I should just keep it clean and use ointment and band-aids?