MLD and others said it right - 4 months is great and really early. I also recall it being a rough one for me - I was angry and irritated a lot, and usually at un-important stuff. It passed - and I knew how to make quick amends much better by then!!
The entire process of healing, finding our new self (I believe we find a new version of ourselves, with some of the basic things there all along, rather than recovering an old self - we don't just revert) and living beyond being sober, into a life in recovery, is a process.
My program of AA was the guide and it indeed supports the new ways I learned (and still grow in doing) to deal with life as well as I can.
Keep going Callas. So much good, security in yourself and peace come as we grow in recovery.