Can I get some answers please? Much appreciated :)

[Hferna]

Hello everyone!
Well, I'm a newbie to this forum and workers compensation so I have a bunch of questions and I'm hoping for at least some answers from you knowledgeable wonders

On July 3rd, I had a severe allergic/anaphylactic reaction which included hives, swelling of limbs, face, neck and throat, and inability to breathe properly while working at Petsmart. I was rushed to the ER where the treating physician told me that he was "99.9% certain" that my reaction was caused by an airborne allergy from wherever I was (Petsmart). For the first week after, I was unable to leave my home (which was okay since I looked like a swollen, red lethargic monster for 6 of those days) and I have now been out of work for 13 days.

I was contacted by the Claims Management service who got a recorded statement and then called back a few days later and said I would be getting weekly benefits after she "ascertained my wages" since I only worked two weeks. She also urged me to get an earlier appointment with a specialist (its August 10th). But anyway, here's my questions:
1) If I cant return to Petsmart (or any animal related job as I'm studying to be a vet tech) what will workers comp do? Continue weekly wages until I get a new job?
2) Should I get a lawyer? How important are they? I'm only 20 so I'm not really sure about all this.
3) If I have to change majors, will workers comp have anything to do with it (benefits, training, etc)
4) How do settlements work? Ive seen a lot of posts about them but don't know why you get a settlement.
5) Should I call the CMS and tell them I need them to pay for the EpiPen I need? It is $300 and I don't have insurance. Will they pay for that?
Honestly, I didn't know diddly squat about wc before now so I'm in the dark, so to speak. I'm not even sure how to proceed from here.
Any answers and advice are much appreciated!