Hello jacustomer, it is possible that you could have had an allergic reaction to the high dose of ibuprofen from the symptoms you describe and the relief you got from the antihistamine.
If you have not done so yet, please let your doctor know so it can be put in your medical record.
You will want to check pain relievers you take for ibuprofen. YOu may also want to be cautious with other non-steroidal anti-inflammatory medicines.
I will go to the doctor tomorrow and check for other possible causes.
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