Depression????

I couldnt be happier at 23 weeks pregnant. The only problem im running into is im starting to feel very un attractive. My husband is great with me being pregant but i want him to be more verbal with telling me how pretty i am every day. With him not im starting to not want to do anything with him, even going to bed at night i dont want to even touch him. This is very odd seems how i cant normally keep my hands off him. The past two weeks ive been in the mood to just be by myself lying in bed with no one around me. I feel like this might be a warning sign, but then it could just be a normal stage in the whole pregnancy. Please give me your advice, thank you!