Hello! After a thorough discussion of your problem, I would like to suggest you
1) Although the bleeding is being worse due to grave's disease, It appears that you may have a miscarriage
according to the USG findings which suggest signs of non viable fetus.
2) You are advised to remain under observation of the eminent gynecologist & undergo further investigations to rule out associated PID or a malignancy, & are required to have D&C, antibiotics & haematinics.
Thanks & take care of yourselves!