Pain in Nipples - Majorly Left Side.

Hi, I am posting this issue on behalf of my wife. Pls help My wife is facing constant pain in Nipples - both but majorly in left side from last 2 months during a no. of times - Intimacy - Taking Shower (Water Falling on Nipples) causing pain - Got mild hit by her own hand at times like changing clothes. She doesn't know how to react to it. Last year got married in Apr 2021...  history of urinal infection from Sept 2021 to Feb 2022 ... Got cured via medication and had to leave intimacy and reduce frequency of it. Initially, not allowed during the phase because of pain in ovary due to the infection - later she was scared of the previous pain experience and now going through a lot of things at once ... Mainly Starting of her Student Life. Request you all to kindly help in this regard and what all to do. Pls feel free to ask anything else related to the case.