Odd bump, green poop, missed period.. HELP!!

So I feel like whenever I eat meat the smell gets worse, but I don't know since I can't smell myself.. There was always this bumpy thing that I could feel whenever I touched my lower left stomach. Not sure if it's poop or not. Anyway, the last few days (not counting today and yesterday) I didn't feel the bump thing there. But yesterday I had chicken nuggets and today I had this other chicken and broccoli thing and it's back. I don't know what it is, do any of you also feel this bump? Please let me know. I wonder if I'm alone. Oh, and also, I didn't have my period when I was supposed to. I missed it by like 15 days and today I got it. Really strange. I had diarrhea a few weeks ago, I felt really cleared out, and a week ago I used the bathroom and my poop was green. What does that mean?!??!?!!??! HELP!! Tweet