My boyfriend and I are trying to conceive. My period started oct. 18 my periods are irregular its usually lasts 7 to 8 days. Because I'm irregular is it possible to get pregnant a day after my period ends or when should we start trying again? Please answer the question.:)

Trying is the fun part... try every other day to increase your chances.
Every woman is different and because you are irregular you might ovulate at a different time in the month than other woman. Usually a woman with a 28 day cycle ovulates about 14 days after the first day of her period, but like I said every woman is different. You can buy an ovulation prediction kit to give you a better idea of when you ovulate.
But to increase your chances you can have sex every 3 days or so that way you will be sure to have sex sometime around the time you ovulate. Remember to keep things fun when trying to conceive and don't stress out about it.