What does this mean

kiki • Tue, Aug 23 • ❤️Married ❤️💙BoymomX3💙 TTC #1 for Husband😻 😥3yrs TTC 💜MFI💜

So as of now I'm laying on my left side a strong contraction just hit as I was having it I couldn't catch my breath. Also when I lay on my back I can't breathe either, what does this mean??