Is it possible that one month the pregnancy test is negative and the next month positive?

It is best to do a home test and go to a gynecologist, he will further guide you whether it is necessary to perform additional tests.

And if I go to a beta test 80 days after intercourse, is there also a possibility that, as you said, too early and this homorn may not grow yet?

75 days after intercourse is enough time for the doctor to rule out pregnancy.

And can the result read after time actually herald pregnancy? Of course, I will go to the doctor

And if I go in a week, that is, 75 days after intercourse, will the doctor be able to determine the absence of pregnancy or its presence? Do you hold off yet

I encourage you to go to the gynecologist.

Dashes appeared after time, reading time is 10 minutes and for me appeared after 15, but I read that people appeared after time and were pregnant due to the fact that this hormone was not enough, so I do not know what to think

This can happen, but usually 40 days after intercourse is enough time to take a blood test and assess whether you are pregnant. Perhaps the home pregnancy test was,poorly performed or its result misinterpreted. Please buy one more test at the pharmacy and do it.

So it may happen that beta negative 40 days after and 45 days after and suddenly 60 days after will be positive?

It happens that when performing a pregnancy test, we get a "false positive" result, which means that the result we received is not due to pregnancy, but to other factors. These, however, should be consulted with a doctor. Therefore, I encourage you to go to the gynecologist. No test rules out or confirms pregnancy 100%. Fertilization occurs from 3-5 days after intercourse. Longer sperm will not survive in the genital tract of a woman. It happens, however, that at the beginning of pregnancy the amount of HCG hormone is too low to be detected by a pregnancy test and a blood test. Please repeat the test again (it is always best to do two tests at once - or day after day). https://www.gdziepolek.pl/produkty/97388/domowe-laboratorium-pink-test-ciazowy-strumieniowy-super-czuly-test/apteki Perform it exactly according to the leaflet (from morning urine). If you also receive a positive result - a visit to the doctor is necessary. Article that may interest you: https://www.gdziepolek.pl/artykuly/test-ciazowy-jaki-wybrac-i-kiedy-zrobic If you are not able to visit a stationary visit, I encourage you to use the teleadvice offered, m.in. by the Gdziepolek.pl portal: https://www.gdziepolek.pl/telekonsultacja