I got EWCM about 4 weeks after DD was born (fully BF for 4 months), before my lochia had completely stopped even, and AF showed up 2 weeks later. I dont have fertility issues though so not sure if you're likely to O or not given your previous difficulties with Oing etc. but you CAN ovulate, even if fully BFing, soon after birth.

I found my supply dropped on the mini-pill, though i was having issues there anyway.

If it's a condom allergy have you tried the hypoallergenic ones?

Bec