I had the same happen.I rode for a couple of months and then got some minor pain, then major pain. Redness , swelling, it was awful.
Saddle was the one that came with the cycle( its a sub zero) which was too wide for my pelvis.
Im short( 5'3)and small( 50 kilos) so Im actually using a mens selle Italia , that a friend passed on to me. I didnt measure sit bones, as I am small enough to fit mens saddles. ( narrow hips)
Its very hard, but I am finding vast relief and like hard seats more.
Also, dont buy cheap shorts. Get moulded rather than sewn chamois.
I used to use lots of chamois cream, but now dont have too.