almost 3 Months and haven't announced it to his parents Need advice!

Lynnette • 19 yrs old and Expecting baby #1
Me and my bf live together and we just found out we are expecting I already told my mother and shes excited but im quite concerned how his mother is going to take it...he's the baby so he's a mamas boy and I feel deep down she's not going to be pleased. how did your so/bf parents take it when you told them you were expecting!?