I'm not 100% I'll take it yet, as I was kind of hoping it wouldn't come to this. Over the past few months I've noticed a few compulsive tasks that I can't help but do, and if these tasks aren't done, I'll stress about it. What's worse is that if I
can complete these tasks, I absolutely will, even if it's at an inappropriate time (like even if I'm in a hurry, I'll complete the mundane task anyway).
An example of some of the minor compulsive acts...
Before leaving my room, I have to check under my bed to see if any of my damn cats got under there while I briefly open my door (don't want them locked up in my room while I'm gone, they might poop everywhere). Sometimes I'll do this more than once.
Before leaving the kitchen I have to check if everything I took out (to make, say, a sandwich) is back in the refrigerator and sealed. I'll usually check to see if it's sealed more than once (such as the lid being on the milk jug, turkey bag is sealed, cereal bag is rolled up well enough, etc.).
This next one I feel is more justified, because my car does randomly unlock itself (no idea why). After parking, I must check all four doors of my car to see if all of them are locked. I often check more than once after parking. This has lead to me literally breaking off my driver's door handle.

In some RPG's I check my inventory frequently. Why? I fear, for whatever reason, my stats have permanently changed or I've lost some of my items.

These are more minor cases. I'd rather not list the stupidly ridiculous compulsions that I obsess over because they really are absurd.
These symptoms only showed up for the last few months, so I guess this case has only developed and gotten worse. I joked with my friends about having OCD but now I think I might actually have it. Anyway, I went off a bit too long on that. All I want to know is how expensive psychotherapy is (I'd rather not take medication, as I feel it's unnatural plus I don't want to become dependent on something). Would anyone here know?