As you had completed antibiotic course , No throat pain and CBC is normal , it suggests that there is no active infection in your throat. As you have slightly difficulty in swallowing, it may be due to your enlarged tonsils.
Next Steps
If you are suffering from tonsillitis off and on, it will be better to consult any ENT specialist and after examination, they may advice for Tonsillectomy.
Health Tips
Take warm milk with Turmeric powder at night daily, you may get long term relief.