help...

so my partner and I have been together going on 5 years in August. we are currently 7 months pregnant with our first baby. we had a wild sex life before we got pregnant but now we only have sex once a week if that an only while I'm on my side, my partner thinks about the baby, someone must have told him it's the only position safe enough. I have always at a higher sex drive than him. I'm wanting to get the spontaneous sex or flirting back because it's like we have a bloody roster, like I allready no when we're going to have sex I'm wanting to send nudes while he's at work to start things up again but would you find that weird? 7 months pregnant and 5 years of a relationship. I just want the fun non planned spontaneous sexual arousel back between us as I'm feeling alot sexier in my pregnant skin lately and I want him to see that. Help a sister out.