Can I rule out pregnancy after 4 negative pregnancy tests?

Hello, on August 5th I took 7 tablets of Diane 35. That day there was a rapprochement in a condom. On August 6 and 7, there was another rapprochement, without a condom, but without ejaculation in the middle. The rapprochement also took place on August 15, but already with a condom. On August 24, I got the same period as always - painful, abundant and 5 days. On September 12, I stopped taking the pills and on September 17 there was a period - 2.5 days and painful. On October 5, there was also a period - 5 days but painless. The last two periods are not as abundant as usual. I did the test on the evening of October 9 and it came out negative. I also did the test in the morning, October 14, on which it was written that the waiting time is 5 minutes. Within 5 minutes there was only one line, while in about 6.5 minutes a pale line began to appear, which disappeared within a minute. Only one line remained on the test. On the morning of October 20, I repeated the test, on which there was only one line. On November 2, I did the test again - a negative result. Can I rule out ciaze after 4 negative pregnancy tests?