There is no denying the fact that you need to trust your medical team to a certain degree. If you don't, you will never receive the medical attention you require.
But here is something to keep in mind: Doctors and other types of medical personnel are not perfect. This means that they can make a mistake at any time, which could put you in a worse position.
There is nothing wrong with putting your trust in your doctor, but that doesn't mean you should sit back and listen to everything you are told. There are times when you need to get a second opinion. There are times when you need to speak up to ensure that you are truly receiving the right type of care.
Failure to treat a serious condition could cause irreversible harm to a patient. The most common situation in which this happens is when a doctor dismisses a symptom, deciding that it is not worth treating at the present time. In the event of a serious disease, such as cancer, this could lessen the likelihood of a full recovery.
Nobody wants to visit the doctor, but this is something you will have to do every now and again.
You can put your trust in your medical team, but don't do so blindly. These people, just like everybody else, can and do make mistakes. The only difference is that one mistake by a doctor could seriously injure or kill a patient.
If you feel you are not being treated in the appropriate manner, it's time to find a new doctor.
Source: FindLaw, "Failed/Erroneous Diagnosis and Treatment," accessed June 24, 2016