So I'm a bit worried.. For the past few days I've been having some pain and cramp like feelings on…

So I'm a bit worried.. For the past few days I've been having some pain and cramp like feelings on my right side. at first I thought it could just be ligament pain, but then the pain spread into my back on the right side... Idk if this is normal or not?? I've been having some constipation issues so idk if it could be that??? Or maybe kidney infection? I have a drs appt today.. but it still worries me..