"Arguing" with husband about sleep issues

My husband & I are having horrible problems with sleep. We "fight" over space (we have a queen w/ 2 body pillows right now). And my crappy sleeping is causing him to sleep badly too. So then he's grumpy & he has never been a morning person. I don't know what to do any more.

Anyone going through this? Thinking I may sleep on the couch tonight. I would probably be more comfortable, but he misses having me in bed too. I'm 20 weeks today & hate the idea of sleeping separately for another 20 weeks.