Ingrown hairs????

So I keep getting these bumps in my armpit and they hurt really bad they end up pussing like a pimple I guess and it looks like I have a hole in my armpit. They’re like super sensitive to the tough when they get like that and idk how to make them stop. I always have on deodorant and I don’t wear clothes that rub oddly in my armpit. I also get them on the inside of my thighs and they turn a dark purple like a bruise and the spot never goes away which makes me highly insecure about wearing shorts. Idk how to make any of it go away. Help? Any suggestions? I’m the only girl in my house so I don’t have another girl/woman to ask.