Can I seek legal advice for being discharged for being sick?

I was discharged at my job of 10+ years for going home sick. I work as a paramedic, and did not feel right about being around sick patients whose immune systems are already compromised while I was sick myself. I got another crew to do the transfer along with a nurse from the hospital, and I went home throwing up. On my next shift I was told by my employer that I was being fired for not doing the transfer. After this I was hospitalized for 7 days, 5 of which being in the ICU for really bad pneumonia. After 7 days in the hospital I was discharged home with a PICC line in my arm and recieved antibiotics through the PICC line for 7 more days. Even though NH is an at will state is this considered wrongful termination, and should legal action be taken?