Sex after baby

11 weeks postpartum and certain positions (the fun ones) like doggy or cowgirl have been super uncomfortable. I feel like maybe it’s just because I need to get used to it again. It’s been so long since we first tried those positions and if I remember right I had to get used to them and grow to love them. Does sex really change after having a baby? Will it always be like this or just temporarily? Because I really miss those and all the other really fun positions. I love missionary and on our sides but I’m really wanting to do more ☹️