<human>: Hello everybody.

I honestly don't know if I am overreacting here or maybe my concerns are justified. Last year, my fiance,our son and I were on vacation in Finland for 3 weeks. It was horrible, we stayed at parents in law summer "house", which is just a shack, no electricity, no water, no toilet, no possibility to cook other than a grill... it was a camping trip and I hadn't been warned. Also the weather was horrible, the mosquitoes were eating me alive and every day we had to visit some of fiances relatives, parading our then one year old kid around like a circus horse. 

Now this year he wants to go again, spending hundreds of €s for the trip, and 3 weeks of his time, although we should be renovating our house and build a nursery for our second child, which is due in November. I told him I wasn't coming with again as I really didn't like it, but for my fiance it's his dearest childhood memories, his extended family and the place where he truly feels at home. So he wants to go without me and take our son along, because who doesn't want to sit in a car for 3 days with a whiny 2 year old in the backseat and without another adult around? And that's just one way. Also, I'm pregnant and don't have a car, what if something happens? And our sons birthday is in that time, I will miss his second birthday. And I was never away from my kid for more than 12 hours, how could I survive 3 weeks? I'm all around uncomfortable with this whole situation but fiance is dead set on going. Any ideas, advice, opinions? Thank you.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Fiance wants to take son to Finland for 3 weeks and leave me home alone, don't think it's a good idea.