I sympathize with OP, as my residency also has minimal gyn training--abnormal uterine bleeding, pap smears, LARC, etc all get sent straight to gyn by our attendings. I prescribe depo and OCPs but many residents don't feel comfortable discussing all the contraceptive options. It's hard to go from that to trying to work up a middle aged female with worsening heavy menstrual bleeding as an attending. Do you get imaging? Should you send for an endometrial biopsy? If you've never done it under supervision it becomes easy to refer out and barely do women's health at all.
Personally I'm doing outpatient gyn electives (and probably nexplannon/IUD courses) as I'll be doing primary care in the future but that's required me to be pretty proactive about it. I feel like spending a year doing a women's health fellowship is a waste of time for most people, but I don't think it's unreasonable to say that most IM residencies neglect women's health to some extent.