Finasteride sexual side effects question

I’ve been on finasteride for a little over 6 months now and so far up until yesterday I haven’t been experiencing any sides. But yesterday I was getting frisky with my girlfriend but couldn’t get my dick to get hard. This was the only time that this has ever happened, and there’s also other factors such as me not getting enough sleep the past few days. Was wondering if anyone knows when finasteride side effects supposedly happen. Thanks!

Maybe you are reading too much into it. Most men have days that they are off and maybe this was yours. Most men don’t get sexual side effects out of the blue. Give it some time and stop thinking about it, because you can make it happen