Anyone know mom/toddler groups in Rijswijk or Den Haag? 

It depends on where the pain is located, and how severe. Feeling a bit uncomfortable and achey in your lower abdomen is common, because your uterus is expanding and the ligaments are stretching. I would recommend talking to your midwife about ANY pain you are having, so she can tell you what is normal and what is not.

An epidural is explained here http://www.americanpregnancy.org/labornbirth/epidural.html I had a scan to check the baby's neck when I was still living in Ireland. This is very common and nothing to be concerned about. Most things can be bought later in the pregnancy, but if you are very excited there is nothing wrong with picking up a few small things once and awhile! I bought a blanket and some clothing early in my pregnancy because I was so excited :)

I am a stay at home mom, so I am not sure about day care, but I did deliver my daughter here. Most of my pregnancy was in another country, but we moved here before she was born. Read a lot about the different stages of pregnancy and childbirth ahead of time. The midwife should be able to guide you/explain, if they speak English fairly well. My midwives spoke English but most of the medical terms they were unable to translate, so I relied on my own research on pregnancy and delivery. I opted for a hospital birth, but home births are very common here. If you have a preference, let them know early on. If you want an epidural, you need to request it in advance, as there is no one on staff 24/7 at the hospital for this. I didn't get one, but the midwife told me it would be hard to get someone there if you decide to get one while in labor. They generally don't keep you in the hospital unless there is a complication. I was home 5 hours after delivery! You should be able to get recommendations from the midwife, but you need to find a kraamzorg in your area. It is basically a nurse that comes to your home after you have given birth, anywhere from 5-10 days I think. She checks on you and teaches you how to do basic baby care. She will also cook/clean some if your insurance covers enough hours for it. Feel free to ask if you have any more questions.. Congratulations!

I don't live in that area but I have found it hard to adjust to life here also. While I wouldn't be around for easy meet-ups, I can relate and chat online if you want.