A lot of guys loved to really toss me about because they knew I could take care of myself. If someone was being too gentle, sensei would tell them I could take care of myself and not to worry. Maybe broaching ukemi with your sensei wouldn't be a bad thing.... just depends on their personality and how receptive they are to feedback. Best of luck.
This really does help. My teacher regularly encourages junior people to go all out when training with yudansha -- male or female -- we wouldn't be yudansha if we couldn't take care of ourselves. And that in turn shows more junior people -- male or female -- the standard they're trying to reach.