After 6 monthsof having a baby, the ovulation usually resumes even if u were exclusively breastfeeding the baby.
And day 10 is highly fertile period of cycle. One needs to be cautious during the fertility period.
Next Steps
You can take medicines which prevent conception, but their efficacy decreases as time from intercourse increases and specially if egg was already released before taking medicine, then chances.of ectopic pregnancy also increase.
Health Tips
Consultant Gynaecologist if there is overdue or extreme pain abdomen