Final answer:
Quickening, fetal heartbeat on ultrasound, and Chadwick's sign are probable signs of pregnancy detected by physical exam.
Step-by-step explanation:
The probable signs of pregnancy that can be detected by a physical exam include:
- Quickening: This refers to the first movement of the fetus felt by the pregnant person, usually between 16 and 20 weeks of pregnancy.
- Fetal heartbeat on ultrasound: A regular fetal heartbeat can be detected using ultrasound technology, usually around 6 to 8 weeks of pregnancy.
- Chadwick's sign: This is a bluish discoloration of the cervix and vagina that can be seen during a physical exam and is considered a probable sign of pregnancy.
These signs, when observed during a physical exam, can help confirm the presence of a pregnancy.