Uvula is generally straight but can be little curved, but in your case you are having symptoms (mild) which might indicate an infection which is low grade not cleared by the antibiotics.
Since you have tried medications and still persistent infection, better to show your throat to an ENT specialist and you might require some more medications. Symptoms like fever and swelling will appear once the infection increases.
Next Steps
Consult an ENT specialist online or personally
Health Tips
1. Continue warm salt water gargles.
2. Avoid very cold and sour food for a while.