Naya Rivera finds having sex while pregnant ''odd''.

The 'Glee' actress is expecting her first child with husband Ryan Dorsey and admits they no longer make love as frequently, both because of her changing shape and the idea that the baby is there with them.

She said: ''Things like sex with my husband became a bit odd for me due to the fact that I was now limited to about two positions in order to not squash -- as my husband puts it -- 'its roof' or have the baby (my belly) staring him in the face. I feel like men are constantly imagining their baby winking at them when they make love to their pregnant wives thus making sexy times more few and far between.''

Though the 28-year-old beauty was relieved when her first trimester was over and she was feeling much less nauseous and tired, she found it frustrating to remember she still couldn't partake in some of her favourite pre-pregnancy activities.

Writing a blog for People, she admitted: ''During my second trimester, I felt like the black cloud of extreme fatigue had lifted and I was 100 percent myself again. I was ready to hit the town in a cute outfit, grab cocktails with my girls, have wild sex with my husband ... Oh, but wait, I'm still pregnant.

''There were times during my second trimester when I felt so good that I forgot I was still carrying a child. This mind f**k of trickery led to what I believe should be called 'the second trimester slump'.

''Yes, it was amazing to finally not have to deal with the misery and discomfort most women face in their first trimester. But how awful is it to feel like your old self again, but not be able to participate in any of those fun activities you once took for granted?''