My period was 5 days late so i took a test and it was negative. Then my period came but was lighter and shorter than normal (usually 5 days and heavy, this time 2 and normal-light) so i tested again 10 days later and still a negative result, but im experiencing PMT symptoms all the time- sickness, abdominal pains, backache, light headedness and a change in appetite. Could i still be pregnant?