Could be a reaction to the condom but could also be hormone related hun, I had terrible pain for about a year after both of mine, even with heaps of lube simply because breastfeeding hormones made me extra dry and senstive. You can use a cream but if it is that, however it said it COULD slightly reduce milk supply so I never did. I got pg with DS with no period when DD was 8 mths old! Implanon might be an option too??