Question: what are the early signs of pregnancy and when do they start?
Answer: Missed period. If you have a regular menstrual cycle, this is often the earliest physical sign. ... 
Changes in your breasts. ... 
Tiredness. ... 
Feeling sick/Morning sickness. ... 
Hyperemesis gravidarum. ... 
Going to the toilet more often. ... 
Mood swings. ... 
Changing tastes in food (cravings) and sensitivity to smells.