Getting tested tommorow, and have a 5month old.

Husband is a well because his worker tested positive and last contact was Monday but his worker didn’t get test results back until today. So since Monday I have taken care of baby as usual, but now, should I wear a mask around baby or not? I nurse and it breaks my heart because he loves the close contact and only falls asleep when we are face to face before I move him to his own bed. Idk what to do. I don’t no if I should just keep going on like usual or what