What is this?!

Ok... I have a bump on my leg that is incredibly swollen like an inch around the “head”. It’s sooo tender to the touch that it even hurts to walk. It’s hard to the touch and I stupidly attempted to pop it in hopes of relief... when doing so lots of blood/pus came out but the knot got harder. It looks like a ball of pus wants to come out but it’s solid instead of liquid. Any ideas of what this is?? I have a dr appointment on Tuesday in which I’ll ask about it... but if anyone knows what it could be and if there’s anything I can do for relief please let me know... thanks in advance...

Also I have no idea where to post so I posted where I know there’s lots of traffic (in 28 weeks pregnant also) the pic doesn’t look as bad as it doesn’t show the swelling... also there’s clear liquid coming out of it now.