My last period last for three days and was very light now i am feel really bloated and feel sick could i be pregnant?

Probably not: If you just had your period, you are probably not pregnant. If you're feeling abdominal pain, nausea, and have vaginal discharge, you might have a pelvic infection. You should see a gynecologist or family practice physician to get appropriate treatment and contraception. This presumes that your later period was normal. If it was not, you might need a test.

Yes : If you had unprotected sex during ovulation (mid cycle) you could be pregnant. Please check a home pregnancy test if you miss your period.

Yes: Get a pregnancy test as soon as possible and visit your doctor.