Can dizziness be a symptom of a heart problem/anxiety? i could be feeling dizzy because i havent been drinking enough water, but it could relate to how my chest feels weird at times like theres pressure on it?

Yes! Young, healthy people are less likely to have cardiac (heart) issues but it is still possible. Worrisome symptoms would include symptoms that are brought on my exercise or exertion, fainting, severe chest pain, shortness of breath or heart problems in young family members. Anxiety is a very common cause of feeling lightheaded and mild chest pressure.