Sharp pain under my boob. Anybody else?

So lately I've been experiencing pain under my left boob. It's a sharp shooting pain. It can go on for almost an hour sometimes. It hurts so bad. I get anxious and nervous because I'm scared something will happen to me. It's not all the time. It started to get worse after I started having acid reflux issues out of nowhere. Sometimes it'll start under the boob and go to my back. Right between my shoulder blades. I googled it and the internet is not making me feel any better right now. Any other ladies deal with this? Should I go to the Doctor ASAP??? Feedback appreciated. I'm a 30 year old Mom of a almost 4 year old just trying to live my life. Ain't nobody got time for all that!