When you give birth what with the 1 kid

Do you have any friends you trust near you? We also didn’t have family nearby when my second was arriving. We had friends on standby for when I went into labor.

My labor was so quick that we had them meet us at the hospital to pick up our first child since we didn’t have time to drop him off. But they picked him up outside the hospital just shortly after we arrived.

I'm not sure what the rules are in hospitals in Spain are, I would call the hospital. Here you have to hire someone to watch your kid, they are not welcome in the hospital. If you bring them to the hospital your partner will be watching them and you will be laboring alone. I am also pregnant and have several back up plans. One-my dad drives here from two hours away to watch my son. If he's not here on time then my husband takes me and my son to the hospital and drops me off. And I hired a birth doula so I won't be totally alone giving birth

Your second baby is likely to be quicker. But just as unpredictable as to when. Is it possible you have a friend you can trust to watch him until your mum can get there? Or have your mum come and stay more locally around your due date?
With my second my first stayed with a friend. My 3rd the first two were at daycare for the day and my sister went to pick them up, dropped them off with her in laws

My 3 year old ended up at the hospital with us. A friend sat with her while I had an emergency c-section. And my 3 year old stayed at the hospital with me. Also talk to your doctor about the just in case someone doesn't get there in time. Partner might just have to sit with baby in a waiting area