How much water did you drink, seems to me if you were heaving but not puking than you needed to drink more water. Upwards of 2 liters before ceremony is good. 1 Liter is not enough. Shitting after is also a form of purging, which I consider a successful experience. I had one friend I applied dozens of points to, I lost count, trying to get him to puke. He was profusely sweating than ran to the bathroom for a strong bowel movement.
Sweating also purges toxins.
Also, unless your points are large, I would use no less than 6 for you. 7 again if you can handle it, more will be stronger.