Frankie, I commented on this elsewhere. But to repeat, I think the symmetry of your ring is beautiful and that it does NOT look like a marquise! In fact, the first time I saw it I was really impressed with the lines and was SO excited that you'd received such a gorgeous ring.
However, if it's something that really bugs you, I think you should consider a change. It doesn't matter if 99 out of 100 people love your ring...it matters what you love. I do think that if you change it you should consider a different shape for the side diamonds. I don't think you necessarily need to go smaller, just a different shape (bullets?). Or you could go with a different stone like sapphires. Good luck!