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 heat period usually lasts 30 to 35 hours, with a range of 20 to 42 hours. Ovulation occurs late in the period. Gestation period. The normal gestation period of ewes is approximately 147 days, ranging from 144 to 152 days.