When I purchased my needles for my round 3 (about 9 mo since round 2) I had forgotten the size. The pharm gave me 30 gauge X 5/16" length. After opening one to give 1st injection in my belly this morning, I realized it was a lot shorter....will this shorter length cause me any issues?

Nope...no problems at all. You are not reaching muscle in your tummy with the other needles either, so you are goo with little needles.

I personally use insulin needles, which I believe are 27-30 gauge. You could use bigger needles if you wanted, but hcg isn't very viscous, so you should be fine.