Welcome to the site and OCing!
Always nice to see that another woman has joined the ranks. You might find this site of interest: http://www.corneredcat.com
A lot of people dislike the idea of OCing a small caliber handgun. Because of their size, they were clearly meant for CC. But carry what works best for you in whatever manner you like. Wether you have limitations in hand size, finances or recoil handleing, anything is better than nothing when one's butt is on the line. Once you get your permit you may just prefer to conceal. The trouble with small hanguns like the P3AT (if one wishes to OC it) is finding a suitable holster. Plenty available for IWB but finding a quality OWB holster is more difficult. Desantis makes one: O32BA96Z0 and there are others, you just have to look a bit. Get one with a retention feature. One that's easy for you to release quickly. Those cheap holsters often seen at gunshows, with a nylon strap that velcro's over the gunbutt are not worth a damn.
Regarding attention, I think in general, most people don't notice when a person is carrying a sidearm. Of course (not trying to be sexist here) being a young female, you're bound to get more scrutiny than an old guy like me , so you are likely to get more strange looks. That doesn't mean disaproval! You may even have other women come ask you about it in a positive way. Should you run into a smartass, ignore him. You can maybe try to educate him but don't waste your time in debating with an obvious idiot. Be polite but walk on. Know your state and local laws regarding firearm carry. You'll make a better impression if you sound like a knowledgable and responsible firearms owner.
If you believe you may be at risk of having someone try to disarm you, I would recommend you find someone who teaches retention techniques. Learn em and practice with a friend until the moves are automatic. Then someone might get a big surprise if they try!