irregular period.. help

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So on a November 22 I notice small amount of blood but it was light and only there when I wiped. On November 23-24 I had a small amount of brown on my tampon and it ended. I have irregular periods. I can go months without a period. But I had cramps but not like period cramps. I've be n trying to conceive for very long time and i beginning to lose hope. I'm hoping this could finally be implantation bleeding. Any suggestions