NO! Crying is actually very healthy for you. Every time you cry you are releasing chemicals and toxins from your body. Crying is a very natural process that our body goes through and helps balance moods and even hormones. This is why when you are done crying you usually feel a lot better. Studies have even found that people that cry tend to live longer and happier lives.
Conclusion: Crying is very healthy for you and helps increase your mood and health.