Tw... previous MC

Hi girls! I had a MC in November 2023, i found out on the 16th jan 2025 i was pregnant again. I was 9 dpo ( confimined with opks) i have continued to test every morning and my test has been getting darker, this morning 12dpo it was fainter than when i tested positive. I luckily work at a hospital so got my hcg levels done. I am 4 weeks 2 days today, my expected period is still not for another 2 days for context. My HCG levels came back at 78. Is this too low? I know i have to get another set of bloods done in 48 hours to check they are doubling, i just feel like this is really low still? Have any of you experienced anything similar? Im obviously really worried about another miscarriage anyways.