Hello, regarding HIV, kissing is not considered a risky activity, there are no reports of people getting HIV by doing what you did. There is no need to worry or get tested for HIV.
You could ask about other STDs in the STD forum.
One thing for sure is that it's not HIV.
1- It was your mouth that had the bleeding gums and you're HIV-free.
2- Way less likely to meet someone with HIV positive but anyway even if you want to assume she was HIV positive, she couldn't pass it for you because saliva does not provide good habitat for the virus.
3- I assume it's something else like staphylococcus or streptococcus bacteria since you already had bleeding gums before the kiss. If your symptoms persist, visit your healthcare provider.
Thank you so much dear friend thank you a lot muaaaaah feeling better now