Yep sounds like fun! Gt your DP to help, im sure he'll welcome it lol.. Well i guess it could be worse!
Have you bought the cream yet? You can always ask the chemist if its ok to use while breastfeeding. I did that with some cough lozengers while i was pregnant and he looked it up on his computer for me. But i just did a search on the net for you and they sujest not to use it while pregnant or breastfeeding, so id maybe give your gyno or Dr a call who issued it and ask/tell them if you should use it or not. I wouldnt want to risk it.

When do you get the skin tag removed? is he/she just going to apply the nitrate or do you have to get it physically removed?