Withdrawal after one night?

Kindling is when you go through one withdrawal and each subsequent withdrawal is easier to achieve and also more severe.

I stopped drinking a few months ago after being a pretty bad “alcoholic” for only a few months, possibly having mild withdrawal symptoms. Saturday night I had about 8 drinks. Woke up horribly hungover, way more than usual, and started to develop cold symptoms over the next few days. Today is Tuesday Morning and I feel like absolute shit, like I have the flu, coughing, feeling weak, runny nose, sore throat, no significant shaking though. Is it possible that this is withdrawal all over again or am I being paranoid and probably just have some bad cold?

Please don’t tell me to go to the doctor that is not a choice right now. I will simply detox safely by myself if it is believed that this is withdrawal.