Carrying concealed (I carry all the time) can be difficult and awkward until you find out what works for you through a little trial and error.
There are velcro belly bands that work well for a lot of women who have to work in business attire.
There is also Thunderware, which works well with female athletic clothing.
If you have an open mind, there are actually websites that cater to female law enforcement professionals, and there are many suggestions that may apply to your situation and life style.
Try to avoid getting ideas from websites that involve male sexual fantasies about the gorgeous femme fatale private investigator, spy, and so on who carries her gun in a small holster attached to her garter belt and fishnet hose under a tiny miniskirt...and so on. You get the idea.
Carrying a gun in such a manner may keep you from running when you need to, and a surprising (or, perhaps, not so surprising) number of men initiate a sexual assault by grabbing a woman's intimate areas, and this discloses the presence of the gun to your assailant and puts you behind the reaction curve.
The small of your back may seem a good place to stash a gun, but you can end up with a horrible (and permanent) spinal injury--including partial paralysis and nerve damage--if you get knocked down by an assailant.
If you're concerned about the gun being taken away and used against you, consider a Magna lock fitting.
You can have a Smith and Wesson revolver fitted with a device that only allows it to fire if the user is wearing a special magnetic ring. If your assailant gets the gun away from you, it becomes a paperweight.
www.tarnhelm.com provides this service.
This device is great if you have small kids, since it adds another layer of safety to your (hopefully) prudent gun habits.
If you carry in a hot, humid environment, a polymer and/or stainless gun may work best because of sweat and moisture, but almost any gun can be Cerakoted or nickle-plated to keep corrosion and rust at a minimum.
Consider that some expensive clothes (especially silk, cashmere, and satin) may be ruined and/or permenantly stained by gun oils, solvents, and carbon residue (from shooting), so consider this when choosing a carry method and clothing combination.
I hope I was helpful.
Good luck, and stay safe.