I am struggling to NOT exercise while pregnant.

I am struggling NOT to exercise while pregnant. I had a miscarriage last year and I blamed it on exercising. My OB told me exercising was not the cause of my miscarriage but I forgot to mention that I do strenuous exercises like box jumps. I do a lot of circuit training. Now that I am pregnant again I am having difficulty of staying inactive. Any advices from mommies who has the same problem???