A veterinarian can ultrasound a mare at 14 days post ovulation and be able to determine if a mare is
pregnant. An experienced veterinarian can palpate a mare that has not returned to heat post breeding (at 25 plus days) and be able to feel the conceptus. A laboratory based blood test can be done for around 100 dollars and there are also home based urine tests that can detect a pregnancy in a mare that is approximately 40-120 days in foal and another if the mare from a 120 days in foal. The urine based tests were developed in New Zealand.
2 weeks
3 months
A person can now find out if they are pregnant before even a period is missed.
Maybe a month or a few weeks.
11months
With in 12-24 hours your body knows its pregnant. But you wont know for about 3 weeks.
I want to know how long can be pregnant?
About nine months to a year
11 months.
Usually a day or two before.
A pony or miniature horse is pregnant for about 11 months, or around 320-345 days.
Horses have a gestation period of 340 days.