Advice needed

I have switched from supplier in the first supplier i took up to 6,5mg reta each 3 days and it didnt take effect and i didnt feel it but when i took ghkcu i felt a bit of a sting
Now i have switched supplier i am taking 7mg reta and i still felt nothing and when i took ghkcu i didnt feel a hard sting its allot softer
Does anyone know what i should do with the reta and if the ghkcu of the new supplier is fake?