Have I got an internal hemeroid?

[Bflare]

39 male 5'8" 157lb. For a good long while now I have noticed bright red blood on the toilet paper after having a bowl movement. I have what looks to be a skin tag so I assumed it was that. Also after I had a bowl movement I had a weird feeling for 10 or so minutes after. It felt like something was still near my anus and then I would feel like a suction feeling and what ever was there would feel as if it's gone back inside. I thought nothing of it until I decided to take a look last week after a bowel movement and I was shocked to see a mass like purple sack right on the side of my anus. I would say it's pretty big around an inch. I waited a few mins and looked again and it either shrunk or went back inside my anus opening. I have no pain it just feels weird and liked gross. I'm scared it's going to burst. It's also putting me off going to the toilet. Any advice? Thanks