Dreams involving friends, especially in intimate or vulnerable situations, can often reflect your feelings towards them or your own emotional state. In this case, your friend's pregnancy may symbolize new beginnings or changes in your life, as pregnancy often represents potential and growth.

The act of her undressing and expressing discomfort could signify a desire for authenticity or transparency in your relationship. It might also indicate feelings of attraction or admiration toward her, mixed with concerns about her self-image and how she perceives herself.

The bucket of ice may symbolize a need for refreshing change or relief from emotional heat or stress. It could represent a desire to cool down a situation that feels intense or overwhelming.

Your advances could reflect your feelings of wanting to connect more deeply but may also indicate hesitation or uncertainty about crossing boundaries or pursuing relationships in your waking life.

Overall, this dream might be prompting you to examine your feelings about attraction, boundaries, and the dynamics of your friendships. Consider how you relate to this friend and whether there are underlying emotions or situations in your life that you need to address.