Pneumonia with a new born..... Any input

So I had my little one on Sunday... Via c section. We were released on Wednesday... I went back yesterday due to shortness of breath a cough and chest pain. Turns out I have pneumonia..... Now... I'm swelling everywhere... My feet ankles are now kankles... The small of my back is swollen... She is my second and I didn't have these issues before... I'm exclusively breastfeeding her... And she was born at 37 weeks due to my water breaking....... But anyone that's had a baby knows those first couple of weeks are a blur.... What can I do to help with the demand of my little girl and not being 110% at the same time... I'm still struggling with the shortness of breath and my pain comes and goes.... I don't trust my self sometimes being home alone with her..... I'm struggling mommy's