Is it normal/healthy to get really depressed and have crying spell every few months?

Depression. It would not be considered normal so something must be affecting you that you are either unaware of or are not sure how to resolve. Consuolt with a mental health professional who can help understand the orgin of our distress and how to go about resolving what is troubling you. Best wishes.
No it isn't. Suggest you discuss with your primary health care provider. Problem might be hormonal such as low thyroid problem or psychological. Your dr can work-up the former. Would advise regarding referral/recommendation for counseling or psychiatric consultation if the latter. Good luck.