Baby fever

Does anyone have any tips for for baby fever lol I am 18 and I actually had a SO who had a baby and I cared so much for that little girl since she was even in her mommys tummy (it was an opps pregnancy and I am bi ) we had a break and she got pregnant well long story short once baby girl turned 11 months old I did all I could to be there for the baby girl and for my SO but I gave too much of myself and she just took it all and didn't give me anything but I now am in the best relationship ever and its been 8 months but I just feel like a baby is missing (baby mama cut me off completely and moved far away afterwards) I loved being a mom to that little girl so much and she even called me mama but that is over and miss her a lot still and I will never replace her with a baby of my own she will always have a place in my heart even if I don't see her and pry won't see her agaib or take care of her but I just know my calling is to be a mommy again to my own that can't be taken away from me like that n I know schooling n partying in my 20s n living life is important and my SO is also wanting to wait he is 20 but if any tips of dealing with baby fever are out there please tell me!!