Super tmi!! Tried to blur pic as best as I could!

I got a ton of bug bits (I think they're bug bites) on my butt cheeks about 4-5 days ago. They're kind of on the fence of being on the outsides of my butt cheeks and on the inside. I have no idea how since I haven't really been outside a lot! They itch quite a bit though. If they're not bug bites, I think it may be from my pads. Ever since I got the iud placed, I've been having some brown spotting and the only pads I have are the big long ones that stretch all the way to the front, to all the way to the back. And maybe they're irritation bumps? But whatever they are, can someone PLEASE tell me how to get rid of them fast?! AND I have not had sex in months, also have never ever done anal!