Medela suction issues 😕

Liz • Baby #2 due 12/24!

I'm 5 days pp and I started pumping two days ago. When I first tried my pump the suction was great, but now the suction is horrible! I can even hear and feel air coming out the front of the pump. I do have that little piece covering one side since I'm not pumping both sides at once.

Can this be fixed?!? I am so frustrated with this because my daughter won't latch and I don't want to feed her formula unless I have to. If it matters its the pump in style, the one you get through your insurance.