Everything I have read says ginger is the best for morning sickness, but I have also heard that ginger is used to bring on menstruation and miscarriage/abortion but only if you take about 20grams of it... I found this on a website...

It turns out that it takes less than 1 gram of ginger to control the nausea of morning sickness, while the Chinese, who use the herb to bring on menstruation (and possibly abortion) use 20 to 28 grams for this purpose.
Very roughly, a strong cup of ginger tea might contain about 250 milligrams of the herb, which is about 1/80 of the amount necessary to trigger miscarriage. A heavily spiced Chinese dish might contain 500 milligrams--1/40 of the miscarriage dose--and an eight-ounce glass of ginger ale could contain 1,000 milligrams--1/20 of the menstruation-triggering dose. You'd have to gag down a heck of a lot of ginger before you'd have to be concerned about any kind of problems.
I think you'll be fine unless you are eating ginger by the bowlful!