Is there still a chance that the beta will increase if we had intercourse from Friday to Saturday?

Intercourse can lead to pregnancy if it took place during the woman's fertile time. In my opinion, beta hCG testing is best performed about 14 days after intercourse during which conception may have occurred. Although this is a sensitive test and could indicate pregnancy earlier - the final decision when to perform it belongs to the patient, but she should take the minimum time that must pass for the test to have a chance to show pregnancy at all. It is not clear from your entry after what time you performed the examination. It is therefore difficult to assess whether it is reliable. You can read more about pregnancy tests in our study: https://www.gdziepolek.pl/artykuly/test-ciazowy-jaki-wybrac-i-kiedy-zrobic Bleeding after intercourse can result from various causes, I encourage you to read the following thread: https://www.gdziepolek.pl/opinie-i-pytania/74325/czego-objawem-jest-krwawienie-po-stosunku