Is not wearing warm clothes making me infertile?

My husband and I been trying to have a baby for 8 months now. We went to a traditional Chinese medicine practitioner and she said it's because the "inside of my body" is "cold" making it hard for me to conceive and got told to wear warmer clothes. My hubby's family feel upset every time they see me wear cool clothes even on a warm weather eg. dress, skirt. Is there a fact or scientific explanation about this? Or is this just an old myth? Genuine answers only please.
Is not wearing warm clothes making me infertile?
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