Will this one stick?

So I have not had my period since Oct 30 - Nov 3. I took multiple tests and all were negative, even blood work was negative. Now I have a positive test and got more blood work done and it said positive too. But the HCG level was only at 85. and my progesterone levels are low so I am getting a prescription for that. I am just worried since I would be 9 weeks according to my last period and the levels show I would be around 5 weeks? Does anyone think this one will stick for me?? i am so worried to miscarriage for the 3rd time :'(