10 months.. 3rd pregnancy? Thoughts please?

Ariana

Feb. 29th I gave birth to my daughter at 22 weeks.. Two months later I was pregnant again baby stoped growing at 5 weeks 6 days ended in a natural misscarrige (my body waited till my cycle to termiante) July 3rd-July 12. Since July 12th my levels have been checked. They dropped down to 345 then 332 then when up to 375. I have Had no bleeding since then Had an internal ultrasound to make sure everything came out and it did. Doctor said everything looked perfect... Only issue is now my levels are rising.. Don't know the reason.

I can't lose another baby. 3 babies in 10 months isn't okay.