I don't know what's wrong with my body

I always have normal periods it's been 70 days since my last one I have taken test and all have been negative. I have taken two rounds of clomid and still nothing I am starting to think we are not going to have another baby. My birthday is the 10th of this month I will be 29 I have always said that 30 is my cut off from having more. Sorry just needed to vent I really don't have nobody else to talk to about this my so is just if it happens it happens