Since becoming pregnant I have gone up two bra sizes and this seems to have made my nipples flat. I was planning on breastfeeding but I'm not sure if that will be difficult or even impossible to do if there is nothing for my baby to latch on to. Does anyone have the same problem or know how it can be done?

Sorry can't help, my nipples are the total opposite. Have never been so big or stick out so much lol x

Im breast feeding and mine are flat/inverted i have gone up 5 sizes I use a pump and pump it about 2-5 times and then latch her straight on and she does the rest. It comes out more than enough and then goes back to flat/inverted a minute or so after feeding. It can be harder to establish but i started bottle feeding not thinking i would be able to as i couldn't with my son. However when my boobs filled up this time i tried again and it worked the pump when i got it helped so much. It is getting easier everyday!

So yes you can but it will be difficult

i used nipple shields they helped him get latched on and would pull the nipple out then i could quickly take the shield off and he would latch on fine.
I had the problem of being so engorged there was no way he could get anything iin to his mouth!!
The pump idea is good too.