Those things don't sound exactly like OCD...at least from what I've read/know about it (obviously I'm not a Dr though). I believe OCD involves obsessive thoughts that then result in compulsive behaviors as a means to alleviate those thoughts/worries - it's all about anxiety!!!. It's different than doing something over and over because you enjoy it (like the showers), or getting really hyper-focused on something / someone, which is obsessive, but not necessarily OCD.

I was diagnosed OCD years ago (and have pretty much resolved it using CBT) and for years would obsess about getting herpes (no idea why!) - I would literally spend hours a day thinking about it, the same loop over and over and over and then compulsively check my body for symptoms over and over and over - sometimes the compulsion was so strong I would do so while driving 90 down the freeway. For me, this kind of obsessing is really different from hypomanic obsessing, which usually includes obsessive researching, listening to music, and working on projects. But I don't do these things because I believe I'm warding off something I'm anxious about - even if I'm anxious while doing them, I don't believe my actions are protecting/curing me from something else - that's the big difference (look up 'magical thinking' - kind of explains the ritualizing/superstition that often occurs). I also think OCD obsessions are usually pretty specific and sustained over time, together with the compulsory behavior - it wouldn't come and go with your cycles really, though it could obviously be much morse at times, just like any other anxiety disorder.