Crazy life

I've been tracking my cycles on an app and checking my cervix to track ovulation as a way to do natural family planning and avoid my fertile window and I was pretty regular. Then March rolls around and I was 5 days late which is extremely unusual for me (never have been late without being pregnant), so I took a bunch of tests and they all were negative. I called the dr and asked for a blood test but they said wait a week. I went ahead and scheduled my annual appt for a few weeks later anyway. I ended up starting my period the next day. So I continued tracking my ovulation and fertile window and was due for my period on April 12 which was the same day as my appt. I told her about my wonky periods and how I was due that day with no sign of AF showing. She did an exam and talked to me about how my cycle is probably changing from getting older (I'm 30) and still adjusting from having mirena out in September. Well on Sunday, April 17, I was 5 days late again and decided to test just to rule it out before I continued to google what could be wrong with me. And it was positive! So here I am, a mixed bundle of emotions because it was a shock and the timing is oh so awful. I had my mind made up I had my three boys and that was it for me. God had other plans!