Hi, I am 23 years old. I am having a slight lightheadedness. My head feels slightly heavy. My eyes feel dry. This is been happening since past 4 days. I am currently on my periods and having gases also. I am getting frequent small burps and farts. No vomiting, no nausea No headaches at all. But when I cross my legs and sit, I feel all the more lightheadedness. No lightheadedness after running or walking. But when I get up after laying horizontal, I feel offbalance. Sometimes cramps in legs also. My ear is blocked because of earwax. I was detected with Vitamin D and B12 severe deficiency. I am a vegetarian.