Flying Southwest help

SM❤️
So next week I'm going to be flying with my 2 year old daughter on southwest. I will be almost 15 weeks pregnant during that time with twins. I also have to carry her car seat on now since she needs a seat as well as break down her stroller so I need extra time to board. Does southwest offer pre boarding for situations like that or not? I know I flew with them when she was under 2 on my lap and I still couldn't board early only with my boarding group any advice is greatly appreciated! Oh also my 2 year old does not walk so she needs to be carried.