Dizziness and fall following first dose of Adilimumab

OK, I was going to ignore this, but family have been saying to let my IBD team know.

1 hour after having my first dose of adilumumab I started to feel dizzy, I had headache, and was generally feeling strange. I then walked downstairs, got to the bottom, then did a 180 turn in to the hall, completely lost my balance was hit the deck. Got up, carried on, got a drink from the kitchen then sat down, everything was spinning, balance was off, I had some minor tension in my neck. Slowly recovered over the next hour or two, but was not worried. For 2 days I've just had bad fatigue and increased UC symptoms, which can be expected.

Is it anything to worry about when considering I had an adverse reaction from Infliximab on my third dose, that was more severe in every way, and had headache, everything spinning, head dropping, extreme tension in my neck and back. 😬 The more I type the more I think I do need to feed it back to my IBD team.