Pain Under Rib Cage and Migraines to Go With It

4 days ago I woke up with severe abdominal pain, thinking I was probably constipated I took stool softener (2 Pills) next morning no bowl movement. Every morning with my coffee I take a 17g of Miralax, after 2 days of little to no bowl movement and the pain getting worse I purchased a bottle of Citroma magnesium citrate. I drank the whole bottle with 2 water bottles as instructed. The next morning I had a little bowl movement but I am still having severe pain under my rib cage specially when I touch the area I also have neasea. I don't know if it has anything to do with this but every morning I wake up with migraines that are very painful.
What could be wrong with me this is not normal for me. Please help