What are first doses of DMT like?

I’m newly diagnosed and about to begin on Kesimpta in a few weeks time (just had some vaccinations in preparation) and I’m concerned about how I will feel for the first few doses. How did you feel when you first went on DMT’s? Also, if they are successful for a while in stopping further flare ups and additional lesions, then would I generally feel well? Or still get other symptoms like fatigue? I’m new to all this so appreciate hearing other’s experiences. I understand we are all different. Thank you 🙏🏼