Hi. i am concerned i have found tiny little pea shaped lumps in my neck and keep feeling dizzy a lot. i also struggle to breath at night time too.

See a doctor: These problems deserve the attention of a physician in person. Without a physical exam and complete physical it's not possible to tell you what is causing the problem. If you are having difficulty breathing, chest pain, weight loss, weight gain, fever, cough, all of these things require prompt attention. Make an appointment or consider an emergency assessment if you are sufficiently concerned.