Communication is key on this obviously. I play D as well and I spend most of my time chained to the blueline firing bombs, but I will pinch when the situation dictates.
Whenever I go in, I check to make sure too many guys from the other team aren't behind me, and that someone from my team on the opposite side can get back.
As long as you play with forwards who are good at (and care about D), they will gladly cover your point while you move in as long as you tell them. Most of the guys on my team will tell me they have me covered as I pinch without me saying anything.
This also comes down to knowing your opponent. If you are playing a team with guys with a ton of speed attributes, I won't pinch. Not only will I not pinch, but I'll actually back out of the zone if a puck is close to being turned over.
By the way, I love playing D on EASHL (other than the glitches). I'm one of those players who has zero desire to play forward. There is nothing better than shutting down another team. The best is when you stop a cross crease cheese play and knock the shooter on his rear before he can get the shot off.