I've Had A Heavy Head/brain Fog.... I Have Recently Went

I've had a heavy head/brain fog.... I have recently went through a miscarriage a few months ago & it seems I haven't been doing good at handling stressful.situations lately. I did test positive for step while pregnant so they put me on an antibiotic...then after my.m/c, I felt as if I had a case of bacterial vaginosis so they put me on antibiotic flagyl for that...which threw me in to having a UTI (I've never had a UTI b4) & was on antibiotics for about 2 .5 wks 4 that bcuz it didnt hp away after 1st round of antibiotics...aftery.m/c i did requeat to be checked for lupus, RA, & some clotting disorders bcuz i had a subchorionic hematoma w last pregnancy. Ive has 2 healthy children & im.32. I did finally go c a homeopathic Dr who thought I'd had a case of leaky gut ad started me on a probiotic... it see.ed to really help with the brain fog for about a wk.n half& now it's back
Not sure what to.do. Also, I've had my tsh, t3 and t4, estrogen, progesterone all checked & they r all fine.