Tenant first time Late Rent Payment

[Heather Morris]

I am a renter. I was out on maternity leave, but went back to work before my newborn was 2 weeks old. My rent was due on the 6th and made an arrangement with my landlord to pay the amount on the 14th (today). I have $1,000 to give my landlord today, but am short $355 (my commission from a sale was not reflected on this check as I anticipated) My anxiety is through the roof. I can't breathe, my heart is pounding and I can't concentrate. I have never been late before and I am panicking. What if he will be mad at me? What if he evicts me? I tried my hardest to come up with the full amount, no family was able to help, I don't have enough credit history to apply for a loan. 

From a landlord's stand point, how would you react to this kind of situation?