Yes. Chlamydia may enter the female genital tract and cause injury & scaring to the sensitive fallopian tubes or worse. If an infection is detected prior to damage & treated effectively, the problems can be minimized and natural pregnancy can occur. With todays tech a willing couple can harvest eggs, fertalize & implant embryos, bypassing the tubes. Expensive but possible.
Yes. Yes, you can still conceive after a chlamydia infection.