Relationship problems

I’m 12 weeks pregnant and my relationship hasn’t been so great lately we’re distant and we’re usually arguing most of the time over small things but make them into bigger things and we haven’t had sex because I been feeling morning sickness all day and my body is always tired and even if we did I wouldn’t be much fun. All our spark is just gone and it’s not like we had that much spark to begin with before this. We been together 8 years and we’re both still in early 20’s any tips on how to re spark