Welcome and thanks for your question. Most women begin experiencing symptoms of pregnancy at about 6-8 weeks. This is counted from the first day of your last menstrual period. That being said, all women are different and experience pregnancy in their own unique way. Your symptoms sound pretty general and could be attributed to a number of different things. My advise is to take a pregnancy test if your period does not come in the next week. Most of the over the counter pregnancy tests are very sensitive and pick up even low levels of HCG, the hormone produced in pregnancy.