Is this typical for uterine lining?

Chelsea

I miscarried my baby Thursday at 7 weeks 4 days. Baby and sac came out all at once and doctor told me I have a very thick uterine lining so it will be very heavy when it leaves. This happened this morning and it's very gelatinous? It didn't hurt anymore than the cramping I've been having and bleeding hasn't been as heavy as my normal periods yet.