Daughter only wants me and it’s straining our relationship

My daughter (18 months) has been in a “mommy” phase for almost 6 months now. The severity comes and goes, gets worse when she’s teething or sick, but still is constant on some level regardless.

For the first couple months we just went with it, my husband would handle other things around the house when he got home from work and didn’t take it personally. Now I’m pregnant and need a break. He tries to play with her while I cook dinner but she just yells or cries for me the whole entire time so it’s not really a break. He can’t put her to bed without her crying for an hour. If I leave the house I just know she’s crying most of the time so I just feel guilt and it’s not relaxing.

When does this end or what can we do to help? She does spend time away from me, a few hours a few times per week with my mom and she’s fine.