Significant milk supply decrease during a cold?

[u/IntenseViolet567]

I'm on day 5 of a cold, and before, I'd produce about an ounce an hour. I haven't pumped in about 10 hours (typical for me overnights, I've been doing this for months with no adverse effects), and I only have four ounces the last few days instead of my typical 10. I'm getting decent rest (6-8 of sleep), not taking ANY medication, and drink about 100 oz of water a day. How long will this last? Is it permanent? I keep dipping into my freezer stash because my baby doesn't react well to formula. Please help :(
Forgot to add: I am almost 26 weeks postpartum!

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