HI,
I understand your concern.
Your symptoms seem to be from involvement of ear- nose-throat due to their anatomical connection.
I feel as you have correctly thought , it was
cold allergic in nature to start with.. with., extended to
sinuses /got infected ( puffiness of eyes ). & infeciton spread to throat causing tonsiillar infection ( pain while swallowing & pain in ear ).
Allergy effects in chest cause the pain in upper part of breast ( eosinophiliia )
In such patient usually anti cold drug over the counter should be taken three times a day after food ,with hot saline gargles & steam inhalation .
If there is no relief, you should consult an ENT doctor for examination, blood work,
X ray chest( as per need ) & start with specific druga advised.
Thanks.