Please help with advice- I went to the drs on Wednesday and they couldnt find a baby but thing is I had blood work done…

Please help with advice- I went to the drs on Wednesday and they couldnt find a baby but thing is I had blood work done and my HGC level was at 153 and the they called me thursday and wanted me to come in friday and got more blood work then I called them bc I wanted to results and they said that it doubled within 2 days so now it's at 363 and they said that I was pregnant but I'm really scared about this bc I dont want to get my Hope's up and its negative. So does this mean im pregnant? I asked the lady I that I was talking to and she confirmed 3 to 4 different times but I'm having a hard time believing it.