If you get the urge to roar, do not be afraid. Make it a habit to give glory and praise to God, instead. This can be spontaneous, or you can use the Magnificat. If you make it a habit to turn to God in joy whenever this happens, it is unlikely to be something you are afflicted with for very long.
Consider, too this thought:
“The Devil, the proud spirit, cannot endure to be mocked.” - St. Thomas More, 16th Century
You cannot be surprised that the devil will put a weight of some sort on you if you increase your time in prayer. Do not take the devil seriously, even though he may become very tiresome to deal with. It is OK to laugh off his efforts, not because you are powerful, but because God is, and because you are not so foolish as to concern yourself with worry over things that God takes care of for you.
Likewise, it is also OK if your prayer becomes dry. It is God’s way of not “overwatering” you. This is your chance to practice fidelity, and to put your roots deeper. It is also a state that the devil will try to turn to his own advantage. Do not believe the devil’s suggestion that you aren’t trying hard enough, or that prayer that doesn’t feel good is a waste of time.
Once you wander over in to either fear of falling or feeling shameful at the obvious fact that you need help–only pride could make us think that our utter and constant dependence on God for every shred of strength is anything shameful–you are on the devil’s home playing field. We are nothing without God, true, but we were never meant to be without God in the first place. Our neediness is our joy. We should never worry about it, or fear that we will be left orphaned in a defenseless state.
As for the sexual urges, this is most often no more than a natural symptom of a healthy body. The urges themselves are not a sin. Hormones can do confusing things to our heads, but it is usually part of a beautiful bigger picture…something we live through, like acne and voices that crack while they are still changing and receding hairlines and hot flashes and weird food cravings during pregnancy and all those other awkward things that bodies sometimes do. Satan can only claim credit for trying to get you to make a bad use of your magnificent body. The trials of having a body, though, those are just part of the gift of having one. Don’t worry about them. Keep being humble, and when you can, laugh them off.
In rare cases, there are mental illnesses that cause these kind of miseries, too. If this goes on for too long or is too much to deal with, it is OK to look into whether there is an organic cause for things that cause emotional suffering. There is no shame in that, either. There is no reason at all to believe you are there yet, though. It is just something to remember you could deal with in humility, if it turns out to be the case. Be not afraid, that is the ticket.