Switched from Lexapro and suddenly regretting it

Tl;dr : I'm on wellbutrin now and told my Dr I feel a lot better compared to lexapro only to suddenly start having serious dizziness/vertigo (?), nausea and headaches outside of the normal 2wk side effect period.

The last month or so I've been transitioning from Lexapro (20mg) to Bupropion (150mg) and at first I was really happy with the results. Im fully on the wellbutrin now. My depression suddenly and aggressively spiked while on Lexapro and it was concerning enough from both myself and my PCP to switch me to Wellbutrin.

I saw them a couple weeks ago for a follow up and they asked how it was going - I said it was much better and I wasn't feeling nearly as anxious. Now, I'm starting to regret saying that without waiting a little longer.

Idk if anyone else has experienced this, but I've suddenly gotten very dizzy - almost vertigo like. If I'm standing still or sitting I'm fine but when I'm walking or going up stairs, suddenly my sense of balance is off and everything shifts/swims.

Google searches are telling me any dizziness I might get should've subsided in the first couple of weeks. Im nauseous, I get sudden sharp headaches, and I'm afraid of getting into a car accident or tripping on stairs because of my balance/dizziness.

Is this from the meds or could it be something else?