I recently found out i'm pregnant. i'm on propanolol for high bp at 80mg. is it safe to continue to take?

One of the safer: High blood pressure itself is risky especially if it is uncontrolled.The vascular changes associated with hypertension can cause small babies.1 of the risks associated with propranolol has been low birth weight.It is difficult to know if this is due 2 the drug or the disease.It is pregnancy category C(risk can't be ruled out)but has been used 4 many years in pregnancy and is considered 1 of safest