To @Maja2323:

No, there is no risk of pregnancy in the situation described.

And if a man had come on my pants from the inside that touches my underwear 2 hours earlier and I had now put them on, would there be any chance of pregnancy?

The risk of pregnancy in these situations – through contact with sperm through clothing or hand – is virtually zero, as sperm cannot penetrate the fabrics and quickly lose viability in these conditions.

If a high-sensitivity pregnancy test (10 mIU/ml) performed on morning urine is negative 18 days after intercourse, it is reliable. Spotting can be caused by stress, hormonal fluctuations, or other factors unrelated to pregnancy. If doubts still exist, it is worth consulting a doctor.

If you need more personalized advice, you can use teleconsultations here:

https://www.gdziepolek.pl/telekonsultacja/z-ginekologiem

Or if you had fresh sperm on your hand and touched your pants in place of the vagina? I know it's a stupid question, but please answer if in this case and this 1 question about sitting down to argue there is any chance of pregnancy

I will add that my cycles fluctuate, once I am 28 days old, once 29 times 30, yesterday I did an ultrasensitive test 10 negative, today negative, can I definitely rule out pregnancy ?