This one’s super comfortable and doesn’t take up the whole bed like a U shaped one does 😊https://www.johnlewis.com/momcozy-j-shaped-maternity-body-pillow/p112262205
I bought a long pillow for £10 from dunelm and that did the trick for me
https://amzn.eu/d/88S6Nlk I had this with my first and it was absolutely amazing. Takes up a lot of space in bed though and partner felt a bit pushed out so I won't be getting one this time round but honestly it was so nice yo sleep in and for after my son was born