I love my SO but....

Sometimes I'm not sure if he truly loves me. Someday so wish he'd just go stay somewhere else for a few days. I love him but I don't feel like I'm #1 anymore... He stays on his phone texting instagraming and etc. sometimes I feel my husband has no time for me and with me being pregnant with our third child I just don't feel the support. Idk we've been in a rough patch for 2 months and it seems like he's faking sometimes idk wth is wrong with us.