Could my skin cancer have turned into bladder cancer?

No... Theoretically a skin cancer could metastasize to the bladder, but that would be extremely unusual. Also, technically, this also would not be a case of the skin cancer 'turning into' the bladder cancer.
No. No, skin cancer does not cause or increase your chances of developing a primary bladder cancer. Other risk factors cause bladder cancer but not skin cancer.

Related Questions

Could taking baths in rusty water give me bladder cancer?

No. No current literature supports rusty water as a source of bladder cancer. If you can avoid bathing in rusty water, do:). Read more...
No. Bladder cancer is a multifactorial etiology. It is generally associated with smoking and certain carcinogens such as benzenes, dyes, etc. It can also occur without any risk factors, as with any cancer. However, it is not related to rusty water. Read more...

Could someone have/had bladder cancer and then have lesions show up on the cervix?

Can be, but not... Bladder cancer is not directly related with the occurrence of cervical lesion or caner, but independent. But generally, one with cancer in one organ tends to have a higher possibility to have another primary cancer in other organs as compared to the corresponding general population; this may reflect the working of genetic factors and lifestyle. Read more...