Really need help....

Hey guys so I really need some help. In November I had a miscarriage. I got my period again in December, and got back on birth control. On January 13th I had my period again, then a few days later went off birth control (we wanted to try again) then got a really heavy period on the 23rd. I missed my period for February, and when I went to the doctor yesterday had very faint lines on 2 urine tests, today they called back with my blood test results and said it's a 29, which is super low for how many weeks I would be based on my last period. She did say things might be off track, and because of having 2 periods I may have ovulated later, I'm going in Monday to repeat blood tests. What do you guys think? Is it still early or do y'all think I will miscarry again? Any doctors on here or any one have a similar experience, please help a girl out ☹️