No beta, there is no way that leads to pregnancy, please dont stress over it. If you ever have questions about how it works, a doctor or even a good book can help. You are okay.
No, that cannot cause pregnancy at all, there is no connection between the digestive system and the reproductive one. Pregnancy only happens when sperm meets the egg in the uterus. Dont worry about this.
Biologically no, it is not possible for pregnancy to occur that way. Conception needs sperm to reach the egg through the vaginal route. If you have other doubts about contraception, a doctor can explain clearly.
