This happened to me during 2 cycles this year the first time it happened I was 10 days late. My husband travels for work and I go with him. Well he had to go to florida so we decided to take a mini vacation and stay there for a long weekend well the first day we were there I realized my period was late so i tested and it was negative but over the course of the weekend i took 2 more and they were still negative I thought there might be a chance I could still be pregnant so I didn't even get to drink a margarita on the beach like I planned 🙄...but a few days after we got back home I started..so i chalked it up to being on vacation and traveling stress well we didnt go anywhere or do anything out of our normal routine the following month and I had the same scenario but i was only about a week late that time...before my periods always came on time within a day or two of exactly 30 days which was a normal cycle for me. Ive had a problem with recurrent miscarriages in the past. Ive had 3, so now Im on birth control until I can figure out whats wrong with me. Have you ever had any issues in the past or ever any irregular cycles before?