Blood test results

Heyy,

So yesterday, after several faint positives I got a positive on Clearblue digital. I went in for a blood pregnancy test ( due to up coming procedure needed to know if I’m pregnant ASAP) and that turned out positive as well, but my levels are low - only 13 mIU/ml. Going back next week if there’s no issues before then. My last period was May 22 and I got a positive opk on June 9th so I guess the dates match to me being 4+1 ?

Anyone with this low readings end up carrying to term? I’m so worried 😣