Southwest TN CC

Does anyone that has/is currently attending SWTCC know if the GPA is based off EVERYTHING you've ever taken or simply what transfers? I was told by one woman in the Nursing building that the GPA is based off ONLY what transfers to SWTCC (which in my case is one class, an A). I called today just to double check and the woman I spoke to said that everything that's on my transcripts is used to calculate the GPA. I'm really hoping this is NOT the case because I have some horrendous grades from 3+ years ago. It will take me years of all A's to raise it to the bare minimum required. Since I've started SWTCC I've maintained a 4.0 (2 classes so far). Anyone out there have any sort of answer? :/