
Is Productive Cough With Yellow Mucus And Blood Streaks A Concern?

Most likely not concerning.
Detailed Answer:
Hello and welcome,
If you are feeling progressively better (resolution of fever, more energy, less throat pain), then I would let it go. It may be that your infection was not just in your throat, and the antibiotic is treating this, allowing your body to clear it out.
The streaks of blood can just be from a broken small blood vessel from the irritation.
As long as you are continuing to feel better, I would let this go. Get as much rest as you can to allow your body to heal.
If you start having a return of fevers or higher fevers, or increased cough and shortness of breath, then it is time to go back in and make sure there is not something else brewing. However, likely you are on the mend.
I hope this information helps.

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