Frustrated with ering sizing 😭

I finally got my ering back after being sent back twice (zales) for resizing. The ring went from a 7 to a 6 to a 5 full... before sending it back I tried on the 5 and 5.5 over and over again just to make sure it felt right... the associate recommended the 5 full and stated that it’s just a little bigger than a standard 5. Now I feel like I should have gotten it bigger. I don’t know how it’s suppose to feel since I’ve never worn a proper fitting ring, I just assume that the ring should feel— right! I do have my monthly visitor and did not have it during the time of resizing so I don’t know if that is playing a role. Bottom line:
1) should I send it back?
2) should I wait until Aunt Flo is gone first to send it back?
3) does it look like I have sausage finger?
4) how should the ring fit? (I’m tired of zales, they are sweet there but I feel like they are really helpful)

thanks in advance 🤗