@valrocks is right. she suggested it and I got smaller ones and it's so much better.

I used the wrong size for 2 months. It's not fun but it shouldn't hurt.

Maybe turn the power of the suck down a little

i think it is. my nipples fits right in but ill check it out thanks @valrocks

Make sure you're using the correct size flange. Maymom makes a printable ruler.