Pregnant and struggling with self confidence

Ok so my partner and I have been together for nearly 4 years we are engaged. We are a blended family I have 2 children from a previous marriage and he has 3 children we have full care of then we also have our baby together and another one on the way. So I'm currently 15 weeks pregnant and struggling to love myself I know this is my 4th pregnancy so my body is never going to be the same which I can handle but my partner and I have sex very regularly like everyday or every second he loves me and my body always wants to look at me and obviously play but I'm so self conscious I just wanna hide under blankets and don't want to go on top he never forces me to but I know he would love me too...anyway has anyone experienced this and how did you over come it of you did at all

This is me as of today