Can someone who had s.t.i have a baby?

Yes: In majority of cases, no problem with conception. Females may have scarring of fallopian tubes which can lead to greater risk of ectopic (/tubal) pregnancy, so need close following by obstetrics.

Many do: The first step is to treat the std. Many of these can cause miscarriage or fetal damage. Once treated (if treatable), pregnancy can have a normal outcome.For some std's with chronic recurrent features, pregnancy can be established during a period of good control or remission & progress normally if certain precautions are taken.