How, oh HOW can I housebreak my new dog?

I got a dog this past weekend, she is about 1 and ½ years old. The place we got her from kept her outside most of the day and let her sleep inside at night so she was pretty much able to go to the bathroom whenever she needed.

As of Saturday night she was now at our house. She didn’t pee for 2 days, and when she finally did it was after we had stepped out for a moment and she peed all over the kitchen. The next morning I took her to the park and she DID poop in the park, it was awesome and I made it a point to tell her just how awesome it was.

Today, she pooped just a tiny tiny bit in the house and my girlfriend took her outside and she pooped outside again.. poop inside was gross but at least she finished her duty outside. Tonight however, I took her out for a good hour. Nothing was happening so we came back home, she started to walk around the apartment like crazy and whined a little so I took her back outside for another 20–30 minutes. Still nothing. Came back inside and in less than 5 minutes she peed in the living room.

HELP :(