It's a common courtesy that you not take over someone else's thread with a different problem. Most everyone checks out new threads that are in the forums that they frequent. You shouldn't worry about being lost in the crowd. In fact, if you post something in someone else's thread like you just did, the chances are greater that you will be overlooked.

Can you imagine if this place only had one thread in each of the forums? It would be a mess. One depression thread, one therapy thread, one relationship thread, etc. It would be thousands of pages long and everyone would be talking over everyone else. No one would get any help.

Good luck learning the ropes. You can always ask a question in the general forum or the technical forum if something's confusing you about how to navigate this place.