Side effects of Escitalopram (Lexapro) after initial 6-week period

Hello! I recently started treatment for anxiety and was prescribed 10 mg escitalopram (known as Lexapro, depending where you are located) for a 6-month period to start.

I adjusted to the medication pretty well and the commonly known side effects, such as difficulty concentrating, dizziness, etc. passed by around my 10th day of taking the medication. I'm about 7 weeks in now (1.5 months). Between the 2nd week to 5th week I believe I was feeling pretty good, I felt noticeably less anxious and was generally super upbeat, but the last two weeks, my head has been feeling strange, it's hard to describe. It's not quite dizziness, or vertigo, not headaches. It might be closer to a lightheaded feeling, but it isn't that either.

This is really the purpose of my post, to find out is others have experienced similar sensations after 6 weeks of taking escitalopram, and how long it lasts. The reason this has come to my attention, is because a lof of side effects are reported to subside within the first two weeks of use, which initially was the case for me, and apparently it can take between 4 to 6 weeks for patients to feel the full therapeutic effects, so I'm a bit concerned now as to why this head sensation has come on.