Is a short period ok?

I been on birth control since like 2016 and I am OCD with it and take it perfectly. I noticed that my periods have been coming on wednesdays now , whereas it used to be Tuesdays. I got my period on Wednesday and it was gone by Friday. Is this normal!??? Should I be worried ?? I did bleed and all but usually it ends on Saturday or so. Just worried bc my boyfriend and I have sex but typically he does not finish in me.