My emotions

I feel so emotional lately. I am 8 months post partum and I lately feel like I could cry over everything. Is this normal. I just feel like I will never ever be able to get those memories back of having my boys. My oldest turns 2 feb 13th and I feel sooooooo sad about it. I reminisce about the day I went into labor with him and how I miss it so much😞
What is wrong with me. After I gave birth both times I was really emotional for about 3w after. I know I am done having kids but I get slightly jealous when I hear other women getting pregnant and how much I wish I cherished those pregnancy moments. There are a couple songs that remind me so much of meeting my husband and listening to while I was pregnant and I miss it. Is this normal I feel like I can't get a grip