In my early sobriety I discovered some aches and pains that I couldn't remember experiencing before. I think because I was in a constant state of being drunk or drying out from being drunk, I wasn't really tuned in to what my body was really feeling. When I was actively using I also wasn't big in to the whole taking care of me thing. Your body may just be settling in to not having toxins running through it. If you remain concerned, perhaps be in touch with someone in the health field. Congrats on your recovery time!