I’m trying to get pregnant but my periods are irregular. My last period was 2 years ago & I'm 25. Can I still get pregnant?

Like you, I had irregular periods since I was 12. I started trying to get pregnant around age 25. Now, I had other problems that caused multiple miscarriages - but I did get pregnant 11 times over the next 12 years! My husband’s philosophy was that since we didn’t know when I was fertile, he would just make sure there were always swimmers on site :)
So while I recommend seeing an OB/GYN to check for other problems that could affect fertility, if you are trying to get pregnant just have a lot of sex :). Best of luck to you!