First, you used a condom for the attempted sex. Your chances of herpes from that are at about zero. Let's just skip to the oral.
I'm assuming she performed oral on you. Even if she does have oral herpes, a white spot isn't a symptom of herpes.
Have you ever had a cold sore or fever blister? If you have, that's oral herpes type 1. If you have it, that means you can't get it again genitally. I still wouldn't let someone with an active sore perform oral on me, but otherwise, you should be fine.
Even if you don't have a history of cold sores, you could still have it. About 50% of adults have it, and 90% of them will never get any symptoms.
So if you don't have it, yes, you could get it from oral sex, but you don't know that your partner has it. She had no symptoms at the time, and even if she does have it, without symptoms, your chances of getting it go down a lot.
I'd be surprised if the tiny white spot is anything. It could be an oil gland, or irritation. It's not likely to be a wart from oral sex, and as you said, the timing doesn't fit.
Make yourself - and you can do this - stop examining yourself so much. Limit it to once a day. I know we all have a ton of time on our hands right now, but if you have a herpes sore, you'll notice it. You won't have to seriously look for it.
I don't know where you live, but don't forget about social distancing. You can't get Covid19 from sex, but you can get it from being close to someone.