Does anyone feeling the same when first started

not sure is this the topic but its sort of a mix with general and spirits.

So a few days ago i started to invoke Lucifer(before was a incubus, but i think he left since i don’t feel his presence anymore. I was feeling fine when i invoked Lucifer but recently i feel a bit lightheaded and now i am getting dizzy-ish.

Am i just getting sick or its just some kind of side effects?