My LMC start date was on June 17. Before that it was on May 17 and before that April 18th. I thought my period would have been due on July 17/18th, but according to my temperature my app is telling me it was due July 21/22. I had my wisdom teeth removed on July 22, using anesthesia. It's now 7/26 and I don't have a period. Very acute pain, but nothing more. I have taken several PG in the AM upon awaking and all negative. When I look up conception dates it's says my window was 6/30 - 7/3. However, I did not have sex then. I did have sex with my husband on 7/7, we had intercourse for a few seconds and then used a condom. My questions are could have have conceived a different date than the calculations predict? Second, could I have a late period due to wisdom teeth removal? Could I be pregant? Why are the dates on my app different than the dates I normally would have started this month in regards to my period start date. Also, I forgot to add my app says I ovulated on the 8th, but why ? I had a negative LH test on 6/29. All other ovulation dates for last three months were around the beginning of the month, so why is this month different?