The normal heart rate during pregnancy at rest is between 60 - 100 beats per minute. Although earlier it used to be claimed that a heart rate above 140 beats per minute is unsafe for a pregnant woman, evidence has been contrary to this claim.
In cases of pulmonary embolism, there is risk of tachyarrythmias, which means an abnormal and irregular heart rate. From monitoring your health point of view, I would suggest you use your sense of wellbeing as a more accurate marker of your health. If you experience any shortness of breath, palpitations, chest pain, giddiness etc. then I would suggest you seek immediate medical assistance.
It would be a good idea to discuss the case jointly with your cardiologist and your midwife or obstetrician. After a thorough physical examination, they will be able to assess your capacity for work and physical exertion more accurately.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.