flea !**@! that lasts for almost three months now

i was bitten many, many times by fleas when i was living in my old apartment, at first i didn't know what was biting me, after i figured out it was fleas (because i saw one) i moved out. now it has been almost three months later and my bites still haven't went away, and they are still extremely itch (they look like red dots, and others look just like a bump), i have tired putting on different stuff to make them heal or not itch, but none seem to have worked. please help i don't know what to do.