Hi Miss Sabrina smith,
I want to know -
1) Your age.
2) Presence of diabetes, blood pressure,
cholesterol problem,
heart disease.
3) Habits like smoking.
4) Family history heart disease.
5) Associated symptoms like fever, cough, cold, breathing difficulty, recent
weight loss, recent changes in apatite.
There might be following possibilities in your case-
1) Heart disease.
2) Chronic infections like
tuberculosis (TB).
Though rare possibility malignancy must be ruled out.
You should consult your doctor and get done detailed clinical examination.
Following investigations may help in making diagnosis-
1) ECG
2) Cardiac enzymes like Trop T/I, CPK-MB.
3) 2DEcho of heart.
4) Ultrasound of abdomen and pelvis.
5) Xray chest.
6) Blood tests like
complete blood count, peripheral blood smear, kidney and liver function test, ESR.
7) Urine examination for infection.
Depending on these test results further evaluation may needed.