Got tested for COVID after vaccine
I had the first dose of the Pfizer vaccine one week ago. Unfortunately, I had a sore throat and sniffles and felt really tired on Thursday. I decided to call out, forgetting that you can't just call out anymore. My employer required a COVID test, so that led me to a mini-ordeal of finding a test that would allow me to get back to work as quickly as I could. Walgreens said results would be in 3-5 days. Ugh. Community testing sites around me said 48-72 hours. Medexpress said 24-48 hours, and usually results the next day. Staff at Walgreens told me that Medexpress would be expensive, but I went there anyway. I only had to pay a $20 copay, which I'm pretty sure I can get reimbursed for.
They did the up the nose test--which made my eyes water---and I sat for 15 minutes. Instant results were negative. I went home and slept for 3 hours, then started to feel better.
Felt fine yesterday (Friday) and they called with the results (also negative). I kind of was feeling that I had a cold or something and didn't even think to worry too much until I was told I had to take the test.
I was worried that the vaccine might have given me a positive test result, but thankfully it did not.
So I only missed 2 days of work and inched closer to my second dose (April 3rd). I cannot wait!
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I feel great after my 2nd yesterday! 
And I hope you're feeling better, too
It is strange that it would be a delayed reaction, so I'm thinking maybe I just got a cold or something. Plus the weather is all over the place here in Delaware, and I usually feel funky during big weather changes. Maybe it was a combo 
I just can't wait until 2 weeks after my second dose on April 3---that's when we're supposed to have max immunity. A couple friends were really wiped out by their Moderna second doses, so I'm hoping my Pfizer second dose is not an issue!