Those stink, I had one after my first pregnancy. Try taking a hot shower and letting Water run on it to relieve the pain.
I'm sorry about this, my partner is going through this also but as he's a guy he doesn't have to deal with the pregnancy aswell, paracetamol is safe and depending on the meds they gave you should be fine, I expect cocodamol which had paracetamol in it. I wish you a speedy recovery but it can take a few weeks what with the packing and changing of dressings. X