Welcome to HCM
You are in second trimester of pregnancy
where many physiological changes taking place,so please take medicines and supplements as advised by your Gynaecologist.
Because Iron and other reqirement increase and need supplements and preventive vaccine
A viral flu will improve in few days consult your local Doctor and check your Haemoglobin
if it is low say less than 10 gms/dl.Usually Iron and folic acid
suppementations are given during pregnancy.
In diet you can take fruits and green vegetables and dairy products if you take non- veg egg and meat products may be used.
Good Luck to you