Sex safety?
So I cracked a couple weeks ago. When I cracked I discovered I also like pre-op trans women in addition to cis and post-op trans women. At first the desire was overwhelming and I chalked it up to the flood of emotions I got with cracking. It has since calmed down to normal levels but I see cute pre-op women post pictures on an nsfw subreddit I'm on and the urge is definitely there.
Prior to cracking I only slept with the girl who I lost my virginity too(also a virgin) and my wife( emotionally and sexually separated currently, not due to cracking, still very close friend). I had always considered myself demisexual cause I didn't really have a sex drive until I fell for a girl(not uncommon, a few over the years). Now I think it had something to do with the fact I didn't understand my gender identity. Because of this I never had to worry about STDs.
I understand anal sex is the most likely way to transmit STDs. I'm also worried about oral transmission. I understand condoms exist as well as dental dams. I understand that there's information online, but I also know the amount of sex education for queer people is limited and can be bad or outdated information.
Obviously I'd want an STD test for any sexual partner I gain but I also understand they could get a test that day, sleep with someone an hour afterwards pick up an STD, then sleep with me that night.
What's a reliable source of information for sexual education for queer people? What ways can I prevent STDs during oral in addition to dental dams and condoms? Is it common for cis lesbians take birth control in case of transbian sex in case condom breaks? I know herpes is super common but I also know most people don't get effected by it and it's not included in most STD tests, do I need to be worried about it? Is there other stuff I need to know about sex safety with cis and trans women that I'm not thinking about?