My boyfriend wants baby’s

Hi I’m a 17 year old under weight girl on the shot and my boyfriend 19 constantly jokes(hopefully)about wanting baby’s

he even jokes with his mom about IT she’s like not now. She was talking with him about my weight and basically said I never well have kids if stay underweight. It’s just frustrating to lectured about it by him and his mom.I like him a lot like I could see my life with him. It’s just hard. I gained 4 pounds in 2 months due to no longer running cross country being out of season. Winter track is starting again. My boyfriend told me he was going to get my coaches to make me quit the girls team bc he was a the guys xc/track captain.

I told him I’m going to do it anyway bc it’s my choice and body