If you're banging a fat chick who's dripping wet for you, you'll be able to do that 5hit. If you're fvcking a chick who's small to medium sized and isn't dripping wet, you're gonna have to take it easy on her. You can't slam your pelvis against hers and you can't be a jackhammer.
One thing a lot of guys seem to do in the sack is become completely obsessed with their need to ejaculate. It's fine to do that with your hand and a bottle of lube, but you've got another person to think about who wants sexual pleasure as well.
Men and women are not equal in the sack, they need different things from the sexual experience. Men need to ejaculate, but you don't need to get there as quickly as possible. Women need to be warmed up until their liquids start to boil, they need to be touched, and they need time to cool down if you're able to bring them to orgasm. The demands a woman places on a satisfying sexual experience are far greater than a man's demands. If you don't recognize her needs, she's going to feel like a masturbation toy and will not be inclined to fvck you again.
It's all fine to be greedy if you just want to pump and dump, but if you want to keep the woman around for a while, you'll have to take her needs into consideration while you're fulfilling yours.
The confident way to fix this is to apologize once, tell her you got carried away in the fun, then take her in your arms and kiss her. By apologizing many times like a friggin parrot, you've amplified the situation, made it a big problem, dropped your masculinity and have made her feel like a victim. A woman needs to feel safe especially after she's made herself this vulnerable to you.
You're going to hurt women every once in a while when you fvck them, so you need to learn how to handle it like a pro. Don't make it a big deal because it shouldn't be. All women are different when it comes to sex, and you'll need to adapt your style to what you can and can't do with her.