Is this Hemmoroids? To relieve this?

I have IBS symptoms for a long time. I don't know which food triggers and which doesn't. Sometime, when I eat junk, it is all fine. Sometime I eat good healthy home food it triggers. I mostly have incomplete bowl and constipated even if the stool is not hard. I am a person who generally eat at home and occasionally eat outside, that too low in quantity. Yesterday, I had a lump outside my anus and it started swelling and paining and burning. No bleeding.  Does the lump go on its own and how long does it take? Is it starting stage of Hemmoroids? I have never had this before. Can I do home remedies to relieve this? I feel so discomfort while sitting and walking. Please help. I'm not sure if I can attach the photos here. So I didn't attach