My fuck up

So me and my sons father are co parenting right now Bc we just had a miscarriage and i just got depressed and i couldn’t do it and i thought he didn’t care. He is a wonderful and great guy. I love him. after we started co parenting i had sex with 2 guys. Me not thinking i slept with one the day i was ovulating the highest and the other the next day. I hate that i did and i regret it. I haven’t told him and I’m supposed to start my period on the 6th of this month and I’m praying it comes. I don’t baby want to be with him and have his kids. But I’ve been getting bad acne and I’m stressing. Should i tell him now or wait to see if i get my period?? Here is a picture of our family. Please no rude comments.