Question:I will be in a city where the mikvah is not within walking distance. I may be ready to immerse Friday night, Should I in the first place not do a hefesk tahara so that it ends up on friday that I have to go to the mikvah? Are there any reasons that one can delay going to the mikvah?
Although one can only delay immersion in extenuating circumstances, you should perform your hefsek taharah on time. Your plans may change or you may find an alternative.
If you cannot alter your plans or accomodations, perhaps you could light candles early, stipulating beforehand that you are not accepting Shabbat until after arriving at the mikvah, drive there (arriving before candle-lighting time, at least eighteen minutes before sunset) and walk back.
This internet service does not preclude, override or replace the psak of any rabbinical authority. It is the responsibility of the questioner to inform us of any previous consultation or ruling. As even slight variation in circumstances may have Halachic consequences, views expressed concerning one case may not be applied to other, seemingly similar cases. All health and health-related information contained within Nishmat's Women's Health & Halacha Web site is intended to be general in nature and should not be used as a substitute for consulting with your health care professional. The advice is intended to offer a basis for individuals to discuss their medical condition with their health care provider but not individual advice. Although every effort is made to ensure that the material within Nishmat's Women's Health & Halacha Web site is accurate and timely, it is provided for the convenience of the Web site user but should not be considered official. Advice for actual medical practice should be obtained from a licensed health care professional.
For further questions or comments: 
The Nishmat Women's Health and Halacha Site is a public service of Nishmat, The Jeanie Schottenstein Center for Advanced Torah Study for Women. This project and others like it are made possible by contributions from people like you. If you have benefited from the service, and wish to enable us to help others, click here to donate.
Users of Internet filtering services: This site discusses sensitive subjects that some services filter without visual indication. A page that appears 100% complete might actually be missing critical Jewish-law or medical information. To ensure that you view the pages accurately, ask the filtering service to whitelist all pages under yoatzot.org.
The Jeanie Schottenstein Center For Advanced Torah Study For Women
Berel Locker 26A, Jerusalem
Ask a Yoetzet
Golda Koschitzky Hotline
