is it possible to be given chlamydia if you were using a condom
YES. Condoms do not cover every inch of skin, so you can get herpes, chlamydia, or any other STD even with a condom.
The problem is that a condom does not cover every inch of skin, and you *could* come into contact with infected skin.
The problem is that a condom does not cover every inch of skin, and you *could* come into contact with infected skin.