Anyone had this?

So I had a missed miscarriage at 8 weeks in November and got pregnant not long ago now I could be early on still but basically having so much back pain and belly ache I got an early scan that I had today at 1:30pm. Anyways we went there and they predicted me to be about 6 weeks based on LMP obviously I know this isn’t accurate at all. They couldn’t find anything using normal scan so they did an transvaginal one to which they said it was hard to find anything as I had an S shaped uterus, eventually they seem to have found what looks like the sac but they said it didn’t have the halo thing they normally see so they’re not sure it is a sac. They said it could be a sac and I could be very early on or could be something else any idea or any experiences of what I should expect. I had bloods today and bloods in two days and then if it’s gone up an ultrasound in a week to see if any progression what happens if it hasn’t gone up or what should I expect I’m so confused and emotional starting to feel like it’s something wrong with me as second one in a few months possibly back to back :(