I also didn't have the choice of rehab or external support.
I bought herbal teas, dealt with the horrible digestive things you
seem to be going through now, and began to exercise and refocus
my life away from drinking day by day.
I had insomnia and anxiety for weeks, but eventually it passed.
When I felt better I joined a gym and began an exercise program.
I ate good food and read uplifting books as well as researching alcoholism and recovery.
When you are really ready to stop, you will find a way.
You have a good beginning and a wonderful reason to stop with a new baby,
but you have to quit for you. With the understanding that you are worth being sober for.
Because you are, and you can be. It's a choice, and you get to make a new one each day which is a blessing, believe it or not.
Keep going