If your menses are delayed more than 10 days beyond the due date, with previous periods being regular and you have been sexually active, there is a very good chance of you having become pregnant.
Feeling sick, or vomiting in the morning (give a link for reasons).
Fullness, prickling sensations and heaviness in breasts is common. Your breasts may feel painful to touch also.
Feeling like urinating more often.
Feeling unusually tired and lethargic.
Traditionally the image of a woman eating pickle /"imli" or other sour foods has been used to suggest pregnancy in Indian movies. There is some basis to this, as most women develop strong likes and dislikes for various food items in pregnancy. Rarely, there could also be craving for unusual thing such as mud.