Re: How to raise heart rate naturally. If I were in your shoes I would keep looking for a diagnosis before looking for a symptom management solution. If the MDs are baffled, maybe a bodyworker, sports orthopedist, or physical therapist could help. It really does sound unpleasant.
After mating, sheep have a gestation period of around five months. Within a few days of the impending birth, ewes begin to behave differently. They may lie down and stand erratically, paw the ground, or otherwise act out of sync with normal flock patterns. A ewe's udder will quickly fill out, and her vulva will swell.
The normal gestation period for a full size horse is 335 to 360 days (342 average.) The average gestation period for a miniature horse is approximately 320 days, but they should be closely watched after 300 days, or sooner depending upon any physical changes you see. The normal gestation period for donkeys is 360 to 375 days (368 average.) For goats, the average is 150 days.