Need all the possible info I can get

OK, so I recently found out that I am hyperthyroid, hyperthyroidism causes many thing and one of them is low testosterone. And due to the low testosterone I have been having HORRIBLE EQ.. Did I mention I’m 18 years old? So I’m gonna get treated really soon but my question is this.
I read numerous times that testosterone affects penis size, I also read that the penis really stop growing until around 25-26 (Average Penis Length By Age), so I am wondering will my penis have a little growth spurt from the increased testosterone?

BTW I am Chinese, 6 NBP erection length and only 4.25-4.7 EG (depends where you measure, I really only want more girth). I haven’t done PE forever due to school and all that.

This is not true except for boys in puberty.

No.

Get your disease under control then work on your penis. If you aren’t healthy you can’t expect your body to cooperate and give good results from PE exercises.

Thank you for the answer, but will the higher amount of testosterone have any effect on me or my penis?

Not on size; nor rate of gains through PE, with any probabilities. It can make you more horny, that’s all.

So more frequent erections at least?

More frequent erections; but exogenous testosterone can atrophy your balls, so on the long run you’ll have an even lower natural production of testosterone. The subject is complex and should be managed by an endocrinologist. Messing with your hormones can have very bad consequences.