What Is The Reason For Infection On Crotch?

Hello
A week ago I got travelers diarrhea at my wedding...stomach pains...fever...weakness...in Mexico..the fever and weakness lasted a day....while goin to the bathroom I noticed a painful white blister/ pimple on my upper inner thigh...the skin around it was red in an uneven pattern...looking like cellulitis. My glands on my groin on that side were swollen and sore. I lanced the pustule and applied antibiotic ointment and some anti fungal...the redness slowly disapated and the pustule scabbed up...I figured in my weakened immune state I got a coincidental infection...right? Especially sine I groom and shave down there weekly so something may have been dirty. Since then...in the last week...on both sides of my crotch I've been getting small little bumps that become hot and itchy...they last a day and then something new seems to pop up...ant fungal cream seems to help but not stopping something new from popping up....nothing has looked like the original large pimple thing...there seems to be an Oder too but don't know if I'm making that up in my head....any ideas?