Unfortunately, since you missed sunset (by over twenty minutes), you did not have any bedikah on the seventh day. Therefore, you cannot go to the mikveh tonight. As to when you can go, it depends on what other bedikot you performed.

If you performed a bedikah on day two, then you can do a bedikah tomorrow (day eight). Days two and eight will then be counted as your new days one and seven, and you can immerse tomorrow night.

If you did not perform any bedikot on day two, there is a halachic debate as to when you can next immerse. Please ask your rabbi how to proceed. If you do not have a rabbi, please get back to us for a specific halachic ruling.

If on day seven you used a tampon or inserted toilet paper internally, and saw there was no blood, you might be able to immerse. Due to time constraints, if this is the case, please call our hotline or contact a local rabbi.