So here is a simple and sweet oneshot with Marco and Star finding out she is pregnant because everyone needs a little more starco fluff

Star could hardly believe it she had been staring at the little stick for a solid 20 minutes in her and Marco's bathroom.

She didn't know what to do; she was bursting with happiness but also the nervousness to tell Marco. Of course they had been trying for months she was just so shocked. After she calmed down she proceeded to sprint down the halls of Mewni castle where she could see Marco talking to some of the royal guards

"MARCO MARCO MARCO!" she screamed as she was getting rapidly closer

"Star?" Marco said as he turned around in confusion "STAR?!" Marco then said again as he realized what was about braced for impact.

He was attacked by Star who had the biggest grin on her face. "Star what is going o…"

"I'm pregnant"

His heart stopped "Say that again" Star giggled and said "I STAR DIAZ BUTTERFLY AM PREGNANT WITH YOUR CHILD"

Marco then got a burst of excited (and nervous) energy "Oh my god are you sure?! You better not be messing with me" Star then grabbed his arm and dragged him to their bathroom where the little plastic stick that would change their lives forever sat on the counter.

They were both now staring at it in amazement

Marco then picked Star up and spun her in the air just like he did at their wedding "IM GOING TO BE A DAD! I CAN'T BELIEVE IT!" After he put her down they both laughed and cried tears of pure joy on the bathroom floor.

After composing themselves, Marco wrapped his arms around Star as she did the same to him. They were going to be parents; and not just any parents. They were going to be the best parents because they had each other and that's all they needed