Piercing pain in right nipple. Going on?

Hello, My right nipple keeps on hurting as if needle is being poked on it. The pain starts from the nipple and shoots inside. It's just the right nipple, left one seems to be fine. My 5 month old son latches very well on left side but always seem to have bad latch on right side (he'll start with a good latch and end up just having the nipple in mouth). He doesn't show any signs of discomfort. It hurts a lot when i touch the surface or squeeze. The pain usually starts when he latches and eventually goes away, but today I've been in pain the whole day. I had a bleb few weeks ago which broke and a very mild pain has been there since then. Also, I've been experiencing engorgrment on right breast since 2 days, not sure if it's related. Can someone please help me understand what's going on? I'm in unbearable discomfort right now. Pic attached.