I am a 23 year old woman in India. I have been feeling weak and tired for some months now. I got a medical check up which showed total cholesterol 130, and LDL 64.6 (HDL 54). This was significantly lower than last year's count of total cholesterol 165, LDL 99. I had a complete blood count done about 3 months ago, because of chronic allergic cold. it showed WBC 5000 per cu mm, but a lymphocyte percentage of 52%. in my current full check up, I had almost the same WBC count and lymphocyte percentage, though i have no apparent infection. My haemoglobin is typically around 11.3 g/dL and i always have a somewhat high ESR around 35-40 mm/hr.

I have a tendency towards depression and stress for which i have been undergoing psychotherapy but no medication.
I have been feeling weak, tired, and have mild body ache for the last some months. I have noticed that i need to urinate more frequently ( my fasting blood sugar was normal 80 mg/dL). I had lost a little weight (around 3 kg) a few months ago but i seem to have gained most of it back, maybe just lost 1-1.5 kg in all. For the last two months i have noticed that there is a mild sensation of something jammed in my throat. I do not have actual trouble swallowing, but the sensation is there, also a little dryness in the throat. This month on the day on which i was supposed to have my period, instead i started having very very mild spotting. That continued, but i still haven't had my period ( about 12 days later). in general my periods are quite regular, though i have a lot of pain on the first day. A year ago, i had some non-menstrual spotting but not after that until now.

I am a vegetarian who doesn't eat egg (though till the age of 14 i was a non-vegetarian, though did not eat very frequently).
I am 5 feet 2 inch and 46 kg. My diet hasn't changed much over the past couple of years but I have started some moderate exercise in the last 4 months. The doctor ordered a chest x ray because of the lymphocyte count and weight loss but that was clear.

I am concerned after reading on the net that both high lymphocyte count and low cholesterol are associated with cancer. Do i need to undergo further investigation? do ii need to get checked for hyperthyroidism? Or do i just need to make changes in my diet? I feel weak, and not very alert