I need help about my relationship.

We've been having sex for three years and have been dating the last two. I feel like the spark is running out already and I want to try something new or I wanna do something that can bring us closer together. Sexual or not sexual. Any advice is helpful. We are both still young and I'm pregnant and my hormones are everywhere. I feel like he doesn't want me anymore just our son. Any advice is helpful.  Thanks in advance.