Feeling Insecure

8 months pregnant and I am not sure why but I have started to get really insecure. I have a great spouse and I honestly don't think anything is amiss but I still can't shake this horrible insecurity. For example I get really jealous when he is on his phone. Not to mention a lack of intimacy has definitely added to the mix. I don't want to get depressed but I have a feeling it's going to get to that point. Any feedback moms?