HCG Levels

I have been trying to get pregnant for over a year. We were using Clomid & IUI to get pregnant. I was overjoyed when I got a positive pregnancy test on Thursday 11/16. On 11/17 I got a blood test with my level at 41. The Dr had me retest on Tuesday 11/21 & it was 93. The nurse called & said my levels are concerning & my pregnancy might be non viable. They are having me go again on 11/28 for a blood test. My levels were like this with my son & he was fine. the dr told me to watch out for symptoms of an ectopic pregnancy. I'm terrified. I have no bleeding at all & mild cramping from time to time. I hope they're wrong. 😢😢 Tuesday is going to take forever to come. I'm so scared. Any one else have slow rising HCG Levels & everything was fine??