# first trimester of pregnancy

> beginning third of a human pregnancy, from the first day of the last normal menstrual period through the completion of 98 days of gestation

**Wikidata**: [Q25401933](https://www.wikidata.org/wiki/Q25401933)  
**Source**: https://4ort.xyz/entity/first-trimester-of-pregnancy


## References

1. [Source](https://meshb.nlm.nih.gov/record/ui?ui=D011261)
2. UMLS 2023