No.
Recent tests on Sweet & Low (saccharin) do not establish a link between it & cancer. And the resulting cancer that happened on rats in the 70s is specific to rats, anyway. The same results would not happen in humans so the test results don't really apply to us peoples. Besides, do you really get your health information via tests from the 70s?
Here's a link from the national cancer institute:
Artificial Sweeteners and Cancer: Q and A - National Cancer Institute