feeling yuck

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I'm having one of those days where I feel unwell, and I'm having a hard time making myself eat. I've logged my meals, but had a hugely difficult time eating more than half of what I've prepared. I pushed away my dinner plate and left over half the portion on the plate.

I have health issues that can make eating painful, and my go to foods are soft stuff like yogurt, puddings, gelatin (yuck) mashed potatoes, and purees. I don't even think I can do that today. I'm hoping that I'll feel better tomorrow. I don't know how relavant it is, but I've re-started a low-dose chemo medication that makes me nauseated and tired for a week or so after I start it.

I haven't been able to eat over 800 cal today, and have probably eaten more like 600. How much is this going to hurt my weigh loss?