so tmi but....

My fiancé and I were diagnosed with chlamydia in October. ( we had broken up for four months before that and both had slept with other people). It was treated and confirmed that it was gone. Now I'm starting to have intense burning down there after sex and when I pee after sex it's like I sat on coals. It was never this bad before. So I'm wondering if it's something else or if it's chlamydia again. The reason I think I have it again is a stupidly used a toy before I had washed it and the last time I had used it was when I was still infected.