Im watching season 4 which features Susan getting married early in the season.

Yet, the next couple of episodes don't even mention her husband. In fact one plot involves a mysterious pregnancy test kid which every daughter is questioned about including her.

I checked the Tubi streaming episodes for this part of season 4 and it matches the regular order.

Does anyone know what happened to her husband?

She stayed married. I think there may have been some episodes where Merle was out of town playing baseball.

She stayed married. I think there may have been some episodes where Merle was out of town playing baseball.

Yes. He was back again by the next episode.

But why was she still living at home? Shouldn't she be moving in to his home?

Yes. He was back again by the next episode.

But why was she still living at home? Shouldn't she be moving in to his home?

It hasn't been very long since I've seen those episodes. I think they had their own place once they got married. Susan just came by the Bradford home to visit quite a bit, just like David did.