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Yes, you definitely need to see a doctor as early as possible and get investigated to confirm the diagnosis and start appropriate treatment .
Hemoptysis( blood in sputum ) indicates bleeding in the lung or airways , along with other symptoms mentioned its likely to be due any of the significant causes like respiratory Tract
infection or inflammation or rarely malignancy.
Sometimes bleeding disorders or cardiovascular problems like thromboembolism
( clots of blood in vessels) also may give similar symptoms .
Only after thorough examination and tests can a doctor come to the exact diagnosis and severity of such a problem. Hence it's advisable you consult a physician as soon as possible .
Hope this answers your query.
Wishing you good health .