Abscess on the crease of my upper thigh and butt that was drained and was given antibiotics for at the end of may. it seems as if it is infected again?

Doctor can check: If one has a skin abscess, and it opens up, it should heal from the bottom up. That means a hole while healing is a good thing, because junk can drain out. If it seals itself, or if the hole is too small, junk will build-up inside (that's bad). The inside cavity (may be seen looking through the hole) should get smaller each day. One should recheck with the doctor if the area looks infected again.