Quadrupling HCG, Rainbow Babie(s)?!

L
Hey ladies! I had a miscarriage last month, May 19th. I conceived again straight away without a period. 
I read a lot of articles about high fertility, hyperovulation, and possible twins right after a miscarriage. 
My HCG levels quadrupled in 48 hours. My symptoms are way stronger, earlier than last pregnancy. My super early VVFL (5dpo) combined with the other events make me think this is twins. Anyone else have something similar happen?? Twins??