Gaining weight

Hello all! Let me start this off with saying I have never had an eating disorder or anything like that in my life. I have always been athletic but I do care about my weight. I grew up with two obese parents and have seen the horrible physical and emotional problems it can cause so I have always been aware that I don't want this to be me. I am 5'8" and 165 lbs currently but I am so worried about putting gin baby weight and not being able to get it back off! I feel so shallow for being worried about this, especially when my husband and I tried two years to get pregnant and it has finally happened! I was just wondering if this is somewhat normal and if anyone else felt the same way?