Wow, I was just in the same situation that you're in, no surgeries except wisdom teeth... I'm 4 months out as of tomorrow.
Basic rundown is that I tore my ACL over two separate falls a few weeks apart, first crash was only a partial tear and the second just blew my ACL completely out. Honestly, I was VERY worried on the days approaching the surgery (I went with a patellar graft) because, like you, I had real way to get a decent gauge of how much pain I would be experiencing.
Day of the surgery was super quick, I woke up and just thought to myself, "Fuck. Is this really happening to me?" Next thing I know, I'm in the bed getting all pumped up with drugs... I was honestly awake when the rolled me into the surgical room and I remember them starting to intubate me, which was awful. Then I just woke up and was drinking apple juice... My knee felt so weird, like the tingling feeling when your foot falls asleep.
That afternoon was a breeze (thank god for nerve block, consult your doctor about this, it's a huge help), no real pain. The following days were all pretty easy too, the worst day was the 3rd day (when the nerve block was starting to wear off) but even that wasn't painful. Really, the pain wasn't bad at all for me... The hardest part was really just being relatively immobile for so long. That really got to me. It's hard when you see all of your friends having fun, going out and skating or skiing when you're just stuck home watching movies and stuff... I remember listening to wish you were here one night and getting super depressed haha. I never thought being immobile could be so bad, but it really got to me.
After I started PT, things got much better very fast, I could drive at the 3 week mark. Being able to be independent and not rely on friends for rides is great... After I could start driving everything just seemed to click into place and work out well.
Now I'm 4 months out and feel really, really good. Probably at around 90% and getting better every day. Hopefully I'll be back to skating within the next month.
Anyways, take it easy. Don't push yourself too far within the first 8 weeks, you have one chance at this so don't mess it up. It is frustrating that you can't do everything right away, but you'll get there. I think this whole experience has really made me grow as an individual and am honestly not regretful... If the pain is all that you're worried about, don't worry, it'll be a breeze in that aspect. My knee still does feel a little bit numbed where they harvested the patellar graft, and I've heard it will never feel as natural it did before, but if you work hard enough you'll be able to do everything you did before.
Good luck man, wish you the best. It's not an easy thing to go through, but it'll get better very soon!