Question about Laxatives

I have had serious abdominal pain for a while now (8 months), and have been seeing the doctor complaining about it. I found a ball about the size of a golf ball near my lower abdomen. It actually popped the other day (I felt it pop when I touched it from the outside). But it is not gone. I told the doctor about it today. When I first got excruciating pain after I overate (8 months ago), I was screaming and thought I might die, I was alone, but did not call 911. I couldn't even walk to the phone. Finally I puked and had uncontrollable diarrhea, and eventually went to sleep. The next day I felt somewhat better but have been eating better and differently since then. Not eating to the point of horrible excess, much more careful.
I saw my primary care physician then because I thought I could have had sepsis. She said she didn't think so, but really didn't do anything. Since then I have been having pains and saw her today and she finally ordered an ultrasound for the lower region, becauseI told her I felt a lump there and it hurt. She said it wasn't exactly in the region of the ovaries but near there. She said it could be a digestive problem with my lower bowel.
Here's the question -- I am usually constipated. I noticed when I was taking laxatives with senna in it I was in worse pain. So I stopped taking senna. And tonight I bought glycerine suppositories. I don't know what is there -- bothering me so much, but hopefully they'll find out. Meantime I am wondering if taking a suppository could hurt me. I hope not. I would like to discuss more about this and eventually laxative dependency, what it means. I am 76 years old, female.