Should I be concerned about this bruising and lump?

so i have been getting random bruising lately (like about 2 months now) and they aren't caused by anything. Like i don't know how i got them AT ALL. they are everywhere like my legs, arms and abdomen. But today i noticed i have a lump on top of where my appendix is and a bruise the size of a ping pong ball there also. i have an upset stomach a lot and lots of strange and sudden bowel movements and constant pain. what is this what should i do? Should i try home remedies instead?
Go to the doctor
Go to the ER if you can
It's nothing your fine
Do home remedies
Just let it sit out and wait
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Should I be concerned about this bruising and lump?
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