Hello,
In the first instance, the chance of getting pregnant would be extremely low, practically none. However, in the second instance, even without ejaculation, it is possible to get pregnant from
pre-ejaculate. It seems unlikely that your symptoms could be from
pregnancy, as it would be too early to feel any symptoms. So I would say that your chances are very low, less than 1-2%.
If you don't get your period when expected, I would advise you to get a pregnancy test, and if that is negative, wait another week, and if you still haven't had your period, check another pregnancy test. If you got pregnant, a pregnancy test should be positive by that time, so if it is negative, it would practically rule out pregnancy.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Aaron Branch, General & Family Physician