No. This is midcycle and when you may be most fertile. If you don't want to get pregnant, don't have sex at this time. See this link for more information: http://www.Plannedparenthood.Org/health-topics/birth-control/symptothermal-method-22142.Htm.
Safe for what ? Conception can occur on any day of a cycle including during menses.It is more common at some times than others but if it matters, use countermeasures.
Less likely but... Unprotected sex in a fertile woman with a fertile man has a possibility of conception, but the greatest chance is right around the time of ovulation. This was probably a bit too early, but there is a chance. If you miss a period - do a test. If you do not want to conceive, use protection always. Best!