I always feel fatigue in the lower body.

Hello Doctor, I have hypothyroid problem since last 7 years. I have been keeping my TSH in the normal range. My alcohol consumption remained moderate, was more frequent sometimes. Smoking was like a 2 cigarettes a day. From last year March onwards I began facing low bp issues which was treated with a more physical activity and a bit more salt and fluid intake. Just want to mention before facing this problem I used to consume Patanjali's gomutra ark for almost couple of months just for digestive troubles and relieving constipation. It really helped me in relieving the constipation though.But I am not sure it caused my low bp issue. I doubt sometimes as in Ayurveda it's used as a medicine to treat High BP. Recently in Jan I found that Vitamin d3 and B12 were low was having numbness and weakness in my legs. Symptoms treated with supplements which I am still taking. From last month I am facing weakness in legs right from my thighs. Is something wrong with blood circulation or the nerves?