Yes.
With or without protection you can still become pregnant.
You can still become pregnant, although it will be more difficult. You still have the right ovary and tube intact. And depending on how much of your tube they had to take out if it wasn't much they could still grow back. That happens sometimes with women that have had their tubes tied.
No, once you become pregnant your body no longer releases an egg because the one before has been fertilized. It you could still ovulate it would cause you to have a period.
Yes you can still become pregnant when you have AIDS.
If she is ovulating, she can become pregnant. But that is the only way. If she is ovulating, she can become pregnant. But that is the only way.
Yes, you can still get pregnant when you have a UTI.
If she is still having a regualr cycle then she could still become pregnant, although it can be more difficult.
If the female is still ovulating then yes she can become pregnant.
If you had unprotected sex you could be pregnant.
Unlikely
this means you are no longer pregnant. you were either not pregnant, or you have lost the baby.
If you really had a miscarriage, you can't still be pregnant, but you could be pregnant again before you get your next period.