sick

So I’m sick from a cold , which includes short of breath and pain when I sneeze and and I have a 8 hour shift , should I call in sick for that day ?

I have the flu and need to call out I don’t think I’m gonna be able to go today or tomorrow. I also couldn’t find someone to cover my shift. Who do I talk to the LOD or the ETL ? And should I tell them I would be able to come in tomorrow either?

I called off work last Wednesday due to a massive migraine and fever. I completely forgot to request to use my sick time to make up for the hours. Is it too late?

Is it possible to receive sick time pay sooner than the next regular pay day? Rent is due and I desperately need the money.