Terrible mood swings, odd appetite, emotional, freqent urination, always tired, morning sickness off and on...Why? Should I consider taking a test?

Pregnant? If you have had unprotected sex and have missed your period, you could be pregnant. The symptoms you listed are classic symptoms of pregnancy. You can buy home pregnancy tests at almost any drug store & they are fairly inexpensive. You can also go to your doctor for a pregnancy test & discuss what might be causing your symptoms. If the pregnancy test is negative, see your doctor for a full exam.