what is this solid white thing coming out from my Vagina?

Thanks for your consultation. The white solid thing can be called "discharge" in medical term, and I encourage you to get a checkup in your local hospital to find out if there's any infection or inflammation in your reproductive system. If it is related to these inflammation, then you can try our natural medicine Fuyan Pill to eliminate this symptom. When the inflammation or infection is gone, the heavy discharge won't appear again. Hope this answer helps and best regards