Prolonged bleeding after DIM complex supplement use?

About 1.5 months ago, I started taking a DIM complex supplement. I only used it for 3 days and my period started immediately, so I stopped taking it. However, my period lasted much longer than usual. I initially thought this was due to the DIM supplement, but when the situation worsened, I went to the ER.

They performed blood tests and referred me to this hospital for further evaluation. The doctors at the ER mentioned that a biopsy (endometrial sampling) might be necessary. I haven't mentioned the DIM supplement to the ER staff yet, but I wanted to inform you. Given that this bleeding started right after using the supplement, is a biopsy still mandatory, or could this be a temporary hormonal disruption caused by the DIM?

Prolonged bleeding after DIM complex supplement use?
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