Yes.
It's probably not safe to swallow H+ sperm whether you're pregnant or not. I am not a clinical doctor, but this is a question you should ask him or her for a definitive answer to. (And trust me, you won't be the first person to tell her doctor that she swallows semen...)
Yes, it is not as common to get pregnant while on your period, but you still can get pregnant. Sperm can live inside a women for a few days and it is definitely possible.
Yes you can get pregnant while on your period -
Yes.
No. The blood washes the sperm out. Only animals get pregnant when they bleed.
Sperm should not come in contact with your hands if you are trying to get a girl pregnant. Sperm should enter the female's vagina during ejaculation while having sex.
yes you can still get preggers while on the monthly
Of course, if the sperm at all gets into the vagina then there is a high chance that the female will get pregnant.
Nothing, you'll be fine. Stomach and uterus are not connected
Yes, the sperm waits inside for the egg to come.
First I will always say that unless you are abstinent, there is always a possibility of being pregnant. Yes, you can get pregnant. Common myths suggest that you cannot get pregnant while on your period, that is false information as well; although it is less likely it is still possible. You can also get pregnant from pre-ejaculate as you might not have thought because pre-ejaculate still contains sperm/semen. The pullout or withdraw method can still have sperm or semen that can come in contact with the vagina and get a female pregnant.
It is HIGHLY unlikely, but I suppose by some odd chance it is possible. Most likely the chlorine in the hot tub would kill the sperm. But if he ejaculated inside your vagina while the two of you were in the hot tub then yes you can get pregnant.