Flea weirdness

I have fleas.  A bad case. I am getting bitten badly. I have immune system issues, I'm reacting badly to the bites.
The question I have is these are TINY. Are they a different type? Is there a reason why I'm reacting so badly? Is there anything that can be done to help the response in my body?

A picture off the net of how big a flea is:



A picture I took of an average sized flea I killed in the house:



Note the difference of the size of what is used as a comparison. They used a ball point pen. I used a sewing pin.
These things are TINY!!! Definitely fleas, they look right under magnification, and act appropriately.

Any help on what they are, so I can find out what their egg hatch cycle is and possibly break it? I'm losing here. I have had fleas before, but they were normal ones, the size of the ballpoint pen tip.  These are being far worse to get rid of, and I'm reacting far worse than I have before. Admittedly, I'm under severe stress, and not eating well, I'm working on both of those, and fleas is NOT helping me cope with the rest of it all.  

Incidentally, in case it helps in identification, the outbreak started after I was laying on the grass tearing apart lawn mowers, and the affected areas are 98% where I go, my desk, the bathroom, my bedroom. I don't think the cat is to blame. She moved outside, only comes in to eat, right after I did the mowers. I think she is wise. The places she tends to hang out in the house (before she moved out) seem to be flea free.