Seeing a doctor is a good first step. Unfortunately there is no pill or magic trick that can eliminate or erase withdrawals/hangovers - but drinking lots of water, eating good food ( if you can ) and getting rest will help.
You can eliminate any future WD's or hangover though if you can figure out a plan to keep from drinking again. What have you been using up to this point? Have you tried meetings or therapy/rehab? Self Help books? Joining a monthly or daily thread here on SR?