Left side pain

Hello moms~

I’m 17 weeks pregnant with my first, I’m 35 (almost 36) and for two days I’ve had a horrible pain on my left side.

The first day it went from the middle of my belly to the back. It lasted for about 45 minutes (if I moved I’d feel it) Then gone.

The following day it went from my belly down my leg.

Today it’s just hurt a little so far.

The pain goes from dull to sharp and it makes it difficult to walk but I could move (in paaaain)

Should I be worried? I have my next appointment in 3 days so I think ill be fine but I can’t help to panic