Sometimes things happen and we regret it. Don't beat yourself up now. It's not worth it. It happened and now you just deal with it.
You are absolutely right. It is a very low risk to contract HIV from a one time unprotected vaginal sex episode. 1 percent risk. So, most likely you did not contract HIV from this (plus she wasn't a sex worker or high risk person). So, get tested. I wouldn't have gone on PEP for that exposure as your risk is really so low. Test with a 4th generation Duo test at 28 days for a conclusive answer.
Oral sex was not a risk at all so no worries there. Saliva and air break down the virus so it doesn't infect people via this route.
so get tested but I would not worry extensively about this.
Oral, anal or vaginal? You can take a duo after 4 weeks or any other after 12 for a conclusive result.