Is it bad if I get pregnant so soon?

J/w any of you moms get pregnant right after a miscarriage and everything be okay? I know it's mainly a big deal because they want to use your LMP, but with my miscarriage pregnancy they just made one up for me because they used their educated guess for how far along the baby was. I figure they will do so again anyway. I am just curious if it's bad or not? Or if it can cause it to be a miscarriage also? We are not trying, but I would like some reassurance as a "just in case" because we have had condoms break on us, and when we can we would like to try. Just want to play things safe. Any help would be great thankyou:))