Anyone else experiencing this

Hi all
Fairly new to all this RA stuff.
Was diagnosed last November, managed to get on Adulimumab last May, it was working well but had to stop in September due to skin reaction.
Started Filgotinib end of September, have been taking for nearly 4 weeks.
Every day I feel dizzy, a bit queasy and heavy, like I’ve done an intense workout.
Had a really bad day last week when I couldn’t get my brain to work, felt like an out of body experience. Struggled to hold a conversation. Two days later I felt ok, now back to feeling heavy and dizzy.
Anyone else experiencing this, if so, how long did it last before the Filgotinib started to make a difference.
Any similar experiences or advice shared would be much appreciated.
Thanks
David