HCG ?

Hello ladies. My hCG was only at 8 on 12 days post trigger.. today I went in at 14 days post trigger and it’s 38. The nurse seemed really blunt and said it’s low, and that I need to come in on Monday. I asked her is it a good sign that it more than doubled and she wasn’t reassuring at all just said come in on Monday. It’s not where we would like it to be.. I don’t know what to do. Should I be excited that I am pregnant or should I prepare for the worst?