Pregnant , have always been confident but now i find my self insecure whats going on ?

i have always been a confident person not shy (even in the bedroom with my hubby) even with my previous pregnancies i embraced the weight and still had confidence even when i hit my highest weight 110 kgs whilst pregnant with my 3rd .... im 11 weeks pregnant with my 4th child and lately i have been insecure with my weight im about 90kgs and shy about things with hubby even though he has seen everything before ( weight gain weight loss etc.. and i hate going out cause i feel insecure about myself ... whats going on ? has this happened to anyone else its made me real depressed & house bound