AhHA!! So I think we found the source of the feeling down. Well, it's good you're not afraid to ask... Yes, this TOO is a reason for a Lechayim my dear friend.
I always tell everyone, that in previous generations, such dreams were considered somewhat of a fall, but in
our generation I tell everyone, that if you are having wet dreams you should rejoice!! Why? Because it is a sign that although your body has natural sexual tension - especially because of the past, you still do not give in to it and fall! Do you know what a great thing that is? Your Yetzer Hara
cannot get you when you are conscious. He has no choice but to get you when you're asleep! And he uses this only to try and get you down and depressed about it. That is his BIGGEST tool, to get you depressed. Because in depression, a person can easily fall back into his old ways!
Also, please see
this page of our FAQ as well.