1. In some people, the symptoms are so mild that they go unnoticed. In others, they are so severe they seek treatment, or are even hospitalized. It's highly variable.
2. Only a risk if it came completely off while you were inside her anus. It's advised to use a new condom when that happens, however.
3. No risk.
4. Very low, even if #2 applies.
5. No risk at all.
about 2. It came off as I was withdrawing to change position. Never was my penis in the anus with out a condom.
Thanks for you information. Easing the mind already.
Then you were at no risk whatsoever. Stay safe.