How to feel more sexy for my dh.......

Ok so I'm 24w5d pregnant and am starting to feel just fat, lack of confidence, just on a low. I really wanna spice things up in our marriage and in the bedroom but now being over half way my bump is starting to get in the way. Any suggestions on different positions or ways of getting aroused other than the normal on top, on bottom, him behind? I try and talk or text sexy things but it doesn't work as I've never done it so doesn't really work. What am I doing wrong? What sort of things do you text in order to be sexy? I just wanna feel sexy and make him wanna have his hands and body all over me. Thanks in advance