Hi, It is true that heavy exertion can lead to early pregnancy spotting and this would usually subside with rest and when the aggravating factor is removed. Yet, it should always be investigated to see if there is some other cause through serial trans-vaginal sonograms and serum beta-hCG titres. Abstinence, absolute bed rest and avoidance of any form of stress are necessary until further suggestions. Please consult your specialist for further management. Hope your query is answered. Good luck.