Lol um... I don't know so much as lube because I've never included anything into the bedroom (no kind of sex toys, vibrators, lube, etc) though I am open to it
Anyways, to answer your question, soreness can come from rough sex. The most rounds I did in a day wasssssssssssssss.. 5? I think it was 5 or 4, can't remember but it wasn't until the last I couldn't do anymore because it was fairly rough, which is what I like but I ended up with the nana being sore. I didn't do anything for like 3 days after that.
Just switch it up, be more gentle. You don't got to stop sex completely just for that
y'all guys just be forgetting that besides the breast, the nana is the most sensitive part of the female body. That's why I never understand when nikkahs be like "ima beat it up like a baseball bat," like
nikkah, that will hurt and will not be enjoyable.
As far as running from certain positions, it happens. Think of the inside of the female nana as a tunnel that soon has a dead end wall. Certain positions, ya ass gonna be banging against that wall and that shyt hurt. An example I can use is when I'm on top. I use to tell my ex to don't thrust up as I'm riding because it's like I'm bouncing down while he's banging up. That crap be abit painful
same goes from doing back shots. I'm throwing back as you slamming forward, it hits that wall again. Ya girl just got to find a comfortable posture. Spreading the legs abit helps