Self conscious about not having girlfriends

This is honestly something I've been struggling with for awhile now. I'm a 23 year old woman and I don't have any female friends. At least not close ones that I can hang out with, it seems. Quite honestly, it seems like I don't have any friends I can spend time with. My best friend of 17 years and I parted ways about 2 years ago over some pretty ridiculous drama, and most every other girl I was friends with is either married now or has 1+ baby(s). I guess I'm just wondering if there's maybe something wrong with me? I'm also a med student currently, so my free time is limited, but I kind of feel like a freak 😔