chesil well done on taking the first step, if you look back over the thread you might see a thing I put up about withdrawal just be mindful of it.
Re Dr Google, forget about it, it only makes you worry, something you don't need in starting to go sober.
Also remember that even if there was sonethibg wrong, you can do nothing about it until proper Drs make a diagnosis. - so worrying won't help there either.
The other thing you should read is the list of things you have to look forward to - that and more.
I'm on day 78 now, but I take it one day at a time ...,I didnt drink yesterday, won't drink until today's over - and I have no plan to drink tomorrow.
I'm. Erg selfish with my sobriety, I'm supposed to be on a flight to Lanzarote tomorrow, but I value my sobriety a lot more. Knowing I might take a drink in a moment of weakness on holiday is too mich risk so I've binned the holiday.