Hi lovingmyself1st, good to hear from you again.
Sounds like you're processing a lot. Her departure was so sudden and there was a lot that seemed positive about your relationship, pre-departure. And you wanted to be there for her during her medical scare. Plus, you're juggling thoughts of how your friends and family might respond if you got back together with her. Plus, you're wondering whether the thoughts and desires you're having are even good or OK.
I noticed some interesting "moves" in your thoughts here:
Is it bad that at this point I want her to come back?
I KNOW I shouldn’t let my mind wander here - I can’t help it .
I'm wondering if you would also recognize those parts in bold as Judgments about your thoughts.
I'm also wondering what it would be like for you to "step back a level" and observe your thoughts from a different place.
An example would be:
We can all think. We all think thoughts, and we might describe a thinking experience as: "I'm thinking about my ex", for example.
Stepping back a level would look like: "I'm thinking about how I'm thinking about my ex", or, "I'm noticing that I'm thinking thoughts about my ex".
Sometimes we jump to making judgments or assessments about our thoughts:
"I shouldn't be thinking about my ex", or "It's probably bad that I'm thinking that I want her back", etc.
While there is room in life for judgments about thoughts, I'm wondering how it'd be for you to rearrange how you do things. Instead of Judging or Assessing thoughts first, what if you Noticed or Observed those thoughts first?
If you choose to try that, another thing you can do is -- as you notice and observe your thoughts "from a level up", notice and observe how your body feels as you do that. An example of an internal dialogue about this process might be: "I notice myself wondering if I should try getting back together with my ex, and as I observe that thought, I also notice that my heart is beating faster than usual".
What this process can do for some people is bring back some unity between our rational/logical mind and our emotional/feeling mind, both of which are critical parts of our mental whole. When we have all parts of our mind working together, we may have more wisdom and may be able to make choices from a place of more insight. While it's not a "magic wand", it is something you can try, and you can decide what you think about the practice of:
Noticing and Observing your thoughts before Judging and Assessing your thoughts, and
Noticing and Observing how your body feels as you Notice and Observe your thoughts.
Curious what you think about this way of approaching what you're dealing with -- which is a LOT.
kells76