Can you get an infection from this? And tips for sex pls!!

My fiancé and I touched each other for the first time in 5 1/2 years this past weekend. (Were saving intimacy for marriage but this ended up happening lol). I’d never fingered myself or have anything up there, but he did it to me this weekend.

At first, it was very painful when he was trying to put one finger it. It took a minute because of the pain but it felt decent when the pain subsided. Can this pop my hymen? Or is it force that pops it? I have an extremely small opening in my hymen.

But also, I was reading something about how a guy fingering can cause an infection. His hands were clean as we just got out of the shower but I’m still somewhat worried about infection.

Also, i need tips on handling him too lol. It was my first time touching anyone as well. He told me afterwards the way he would like me to do it, but do you ladies have any ideas? He’s also never been touched so honestly any tip would be appreciated.

Thank you!!!!