Can i be pregnant after 15 days of period? i am feeling bloated, tired & feels like uterine line thicking and cramping too.my cycle is usually 30 to 31 days.

Not likely if...: you just ended your cycle, I would be worried if you missed your period entirely, not if only lasted 15 days. I would look at other factors that could affect the cycle, including stress, nutrition, psychological wellbeing, seasonal temperature, illnesses, and exercise. If you continue with excessive bleeding, you should visit a GYN or family physician to try regulation with oral contraceptives