I've been trying to concive and I just can't get pregnant its been about 7 months please I'm I not getting the right ovulation days down ?

Have you tried using an ovulation kit? They can help estimate when you are ovulating. You can buy them at any drug store. Also you can try googling "ovulation calculator" there are web sites out there that has a calculator that can give you a rough idea of when you'll be ovulating by putting in the date your last period started. And if that doesn't work make an appointment with a fertility sepcialist. He/she can tell you why.

I was just reading you q and a good site to do a calculation is (mymonthlycycles.com) I use it all the time

Visit your obgyn. Most say to do so after trying for a year, but if you are concerned then go now.