I have needs too

So I am 26 weeks prego and me and my husband's sex life is not completely obsolete but when we do have sex he wants a blow job so I give him one well since being prego he has stopped going down on me... I have addressed this to him and well he will go down on me once after I say something then just stop doing it again.. I have needs too and I love when he goes down on me.. I know it's because he feels uncomfortable knowing his baby is in there some where lol but still upsets me because I please him and expect to be pleased back.. Has anyone else husband or SO done the same thing.. How did you handle it