I suspect is either implantation spotting or you may have cough too hard. Monitor and if the discharge gets heavier and you have other unusual symptoms, pls see the gynaecologist immediately.
Yes, unlikely at this stage. I have heard mummies who experiences implantation bleeding later than usual as well. If is a one time and only happens after you have vomited. Then, maybe you have exerted too much. Rest well and eat well during this period. Hope u recover fast and every thing goes smooth for u. 😊
Pei Jie