u/Agreeable-Tutor9316

I had unprotected sex on July 22. My boyfriend ejaculated outside, using the withdrawal method. My period is 8 days late — it was supposed to come on August 9, and it still hasn’t. I took a pregnancy test today using my second urine of the day, and the urine was quite concentrated because I had barely had any fluids. My pregnancy test is negative.What could be causing my period to be late?

I’m really anxious and honestly starting to panic, so I would really appreciate some honest opinions.
I’ve been with my boyfriend for 3 years, and during that time we have had unprotected sex, but he has always ejaculated outside of me. There have also been a few occasions over the years when he did ejaculate inside me, but I took emergency contraception afterwards and nothing happened.
Our most recent unprotected sex was on July 22. My period-tracking app classified that day as having a “medium” chance of conception, but again, he did not ejaculate inside me. After ejaculation, he always cleans himself thoroughly, I also wash myself, and he has never ejaculated and then penetrated me again without washing first.
My last period started on July 10. My app predicted my next period around August 9 (cycle day 31), but today I am on cycle day 38, so I am about 7 days later than the app predicted.
I also looked back at my actual period dates to see how variable my cycles have been:
October 9
November 9 → 31-day cycle
December 9 → 30 days
January 8 → 30 days
February 11 → 34 days
March 14 → 31 days
April 12 → 29 days
May 14 → 32 days
June 13 → 30 days
July 10 → 27 days
So although my cycles are usually around 28–31 days, I have had a 34-day cycle before, and my periods have not always arrived exactly when my app predicted them.
What is making me even more anxious is that I don’t really feel like my period is about to come this time. Usually, when my period is approaching, I get some mild discomfort or pain in the intimate/pelvic area. This time I currently don’t have any pain at all, which is making me worry that something is different.
I currently have some white/creamy vaginal discharge, not a huge amount, but thicker rather than watery. I have also had occasional sensations of pressure or the feeling that my period was about to start, but then nothing happened.
I cannot take a pregnancy test immediately because I have very strict parents and I currently have no practical way to buy one and take it privately, so unfortunately I have to wait before I can test. This is making the anxiety much worse because I cannot get immediate reassurance from a test.
Given all of this, is pregnancy realistically possible from the July 22 encounter, or could a delayed ovulation simply have pushed my period back?
I know withdrawal is not a reliable contraceptive method, and I’m not asking whether it is recommended. I’m specifically trying to understand how concerning this particular encounter is, considering that there was no ejaculation inside me.
I’m extremely scared because I really, really do not want to be pregnant. I’m also worried because I don’t have my usual pre-period discomfort this time. Has anyone experienced a cycle where their period was late and they had none of their usual “it’s coming” symptoms, but their period eventually arrived?