Definitely get your testosterone tested - there are 3 levels you want to look at. When you get your results, look it up online. Your doctor might tell you that you're within the averages but the averages have been being lowered over the years as testosterone levels have been lowering overall. Just something to look into more. You can also get your iron and thyroid checked - one of those can be impacting your fatigue and sex drive. I've been on a similar journey. Godspeed!