Shaving Hairs

Every single time I shave down there, I get irritating red bumps. But it's not only on the usual area. It happens on the inside and top of my hips around the area too. I think it's called your bikini line..? 
But I've come to realize that they're "ingrown hairs", or hairs that grow under your skin, after you cut off the surface hair.
​Sometimes they get really big and gross and just nasty. I'm really embarrassed for my boyfriend to see me in my underwear, or when I go out in a bikini. Any ways to make them go away??