Low HCG

Looking for some support and possibly reassurance. My HcG was only 142. According to my LMP I would be 6 weeks, 3 days. Doctor said I could have ovulated later than I thought and not be that far along, but I got a BFP 2 weeks ago so definitely feel my number should be higher by now. Has anyone else had levels like this at 4,5,or 6 weeks and everything turn out ok? I get labs repeated in 2days. Thank you