Completely normal, but please don't give in. I had the same calling when I was in grade 12, and again last month, and it got to the point (in grade 12) where I had to resist making it "accidentally" happen. I don't know what causes it, but it's a perfectly normal woman thing. But again, please don't give in.

That was actually a really hard time for me because I promised myself years ago I wasn't going to have kids unless the guy literally begged me, and then I'd have to be very stable. I have issues with very young children (babies till about 5), don't like the idea of my body going through pregnancy, and much prefer the idea of fostering and adopting kids when they're past the age of 5 so I can deal with them and not drive myself (more) nuts. I also have a huge fear of my lifestyle choices having negative impacts on children. So until I feel stable, and have at least one partner (I'm polly) who desperatly wants me specifically to have a kid, and they're willing to put in the effort for it, no babies for me!