Baby keeps getting sick, I keep missing work

Just had a baby 5 months ago.. I took a 9 week maternity leave.. I’ve taken off a few sick days. I think this is my fourth total.. but the truth is, my daughter has been really sick each time, and a couple times, I’ve been sick WITH her.. my work place hardcore frowns on being sick.. I’ve got the FMLA to be sick, but I know it’s held against me with being promoted and what not.. today when I called in sick my boss didn’t even reply (it was through text) .. I’m just at a total loss, and am sitting here with a child, with a 102 degree fever - Afraid and guilty for having called in. Anyone else have any similar experiences during the first year after having had a child? Did it get better? And your kid get sick less? And things get better with work ? Or were you forever labelled unreliable and miss out on promotions? Please tell me your experiences