Worry, worry, worry

Angel

Im 34, I have 2 children....Ive been pregnant 3 times all before 25. I had a Mirena IUD in place for 6 years. I got divorced and havent actively tried conceiving yet. Im now in a serious relationship with a younger man. He wants to wait 3-4 more years to have a baby but IM OLD! Im so afraid I wont be able to conceive at an even older age than I am now! I dont know how to feel 😢😔 advice?! encouraging advice?! warnings?!