HCG 16 DPO = 163 ... think I'll be ok?

Last period started 1/20, ovulated 2/5, expected period 2/18 but missed, got blood test 2/21 (3 days after missed period and 16 days after ovulation), doc just called to say I was on the low end with HCG of 163. Going this afternoon for a test 48 hours later, obviously hoping for 300+!