Oh, wow, I'm so sorry to hear this! Hopefully the scans come back and show something positive. I don't think you need to throw in the towel, it's, at least in my experience, best not to make huge decisions from a place of weakness. Just take time, however much time you need, heal, take time for you....and whether it's pressing forward or throwing in the towel (I hate that term, it's more reassessing priorities), you'll know.