If you're really uncomfortable then talk to your family and tell them how you feel.
But if you feel/think there's a glimmer of hope of conceiving through the method suggested by your Guru then why not try it? Nothing to lose in my opinion. I know some relatives who went through even more elaborate processes to conceive -- visiting shrines and going to traditional doctors overseas.
But at the end of the day, it's really up to you. If you're not really really not comfortable then don't do it.
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