Semen analysis

so my fiance is going to take a turn with the uncomfortable tests and have a semen analysis done this Monday (Oct 30th) they said he has to be abstinent for 2-4 days. now I probably should have asked them to be specific but I felt awkward talking about it so didn't. I need to know is that 2 days meaning Sunday and Monday so it's okay if we have sex tonight? (it's Saturday)