Talk to Gynecologist on Early Pregnancy Bt Beta Hcg Is Not Increasing By 1000

Asalam o alaikum.. My last period date is 13 march. I did beta hcg on 22 april it came 1135 on 24 it came 1103 n on 27 its 1165 .. M taking glocophage 500 mg.. Ultrasound main sac nhi araha dr ko nazar she said abi kuch nhi keh sktai sac kahan h.. I need second opinion please help.. History of 2 csec n 3 miscarriage.. 7 years on married. Last dnc 8 month before