Am I overthinking?

It sounds like you are over-over-over thinking!

'What if I'... types of thoughts happen all the time - things like 'what if I left the window open' or 'what if I offended that person when I said X' - and then we can sometimes keep worrying about them and end up feeling really anxious (to the extent that we might actually go back home to check if the window is open, or contact the person we think we offended - who will probably be really confused!)

But sometimes we just know in our hearts that we really did close the window, or we didn't say anything offensive - or that we are not attracted to people of the same sex. So in that case, all that worrying achieves is just making us feel bad.

So next time a thought like this pops up, don't give it any of your time. Distract yourself by doing something else. If you don't pay attention to it, your brain will soon find something else to worry about - we are really good at that!