i would just get an IUD right now, your young, and he MAY change his mind in the future, maybe a couple years down the road, you dont wanna do anything permanent when your not 100% sure, and if u decide you want more kids you can always try to talk him into it lol, SO wanted to wait 3 years to have our 2nd baby and now i got him talked down to a year to start TTC.
I would wait and just get an IUD. I have 2 kids, 1 boy and 1 girl and feel our family is complete. I had my tubes tied after I had my DD 2 years ago and even though I had a lot of complications and health problems during my pregnacies and feel my family is complete and have 1 boy and 1 girl there are still times I think I should have waited. I know it's all emotional and once I think about it I'm still glad I made the decision but I'm only 29 and that may change, you are MUCH younger than me. Give yourself more time!