No
Yes you can have a miscarriage at 4 weeks I have hade a miscarriage at 2 weeks.
i think i had a miscarriage, but i never knew i was pregnant. how do i find out for sure
Yes
Yes
Absolutely. You can ovulate within about 2 weeks of a miscarriage and if you ovulate and have sex you can get pregnant.
Yes.
Yes.
Yes.
To have a induced miscarriage aka an abortion you have to see a doctor. If you are no more than 63 days/9 weeks, you can have a medical abortion. After that it has to be by surgery.
Physically yes you could but healthwise you should wait about another month
yes,miscarriage is a great risk of a 3 week pregnant woman.