Okay so me and my SO are 23 and 24. I have had a normal full term pregnancy at 21. Now we are trying for another. My SO is starting to think that he has fertility issues. I dont fully know if he does or not. But i think its starting to bother him. I was on birth control.for 2 years after having my son but havent been on it close to 5 months. I am currently not sure if im late now or not. Could this be because im just not regular yet or what?