This is a position we discovered rather by accident when my wife was pregnant and it worked all the to past her due date. Might be worth checking out? It does require a little bit of hip mobility on the man’s part, but it’s not really that much of a contortion once you work it out.
Woman lays on her side with “top” leg pointed forward a little bit. Man then straddles bottom leg and slides in. Woman can then move leg back to a more natural position or rest over man’s leg and doesn’t impact position too much. I imagine your partner should be able to slide in and bell could rest on your hip?
Here’s a link to the full description from the positions of the week page.