Remember this: The current obsession is always the worst obsession.
Otherwise, it wouldn't be an obsession in the first place. The current obsession virtually makes all previous obsessions and themes look like a walk in the park.
It too shall pass. You may feel crazy or depressed because the distress is so intense or plain annoying but again, it'll pass.
Don't spend too much time analyzing the obsessions/thoughts as this will not help. OCD thrives on uncertainty and you cannot win the war by analyzing. Analyzing is a COMPULSION. Ask any expert.
Besides, analyzing only brings (if at all) minimal comfort which in turn fuels the OCD beast because you become a slave to it and before you know it, you'll find so many different "solutions" to one obsession. You'll quickly realize that the last "solution" wasn't really a solution after all which will make you question yourself and your ability to think straight.
So when you think about it, what's the point of finding a solution or reassurance if it's only temporary? It goes to show there was never really a solution for the OCD mind. It's call the DOUBTING disease for a reason!
The OCD rabbit hole is deep. Stay out of it as best as possible.