I only have MPB on one side of my head :(

[mpb47]

its just ive been waiting 2 years now to see the other side start getting thinner hairs even at the hairline - they are still so thick all the way to the hairline

whereas on the other side its a lighter colour, the hair doesnt go in position how id like it and there are vellus white hair about 2 inches behind where my hairline used to be - ive started regaine foam for one week but nothing so far

Well if it's slow it will may a long time to see it advance. If it is like mine was, it will slowly move up your hairline, over to your forehead and then back over to the other side. But I would not wait for that to happen.

My experience with rogaine is that it will buy you time, but will not stop frontal loss for long. You are not going to see anything in 1 week..wait till about 4 months at least. If it keeps going consider fin. good luck!