Welcome Rika,
This was discussed a few weeks ago here on the boards, so you're not alone.
I've gone through this myself and know exactly how you feel. Fortunately, my sponsor said it was fine for me to wait until I was ready.
No amount of "time" (ie, 90 days) qualifies you as speaker bait in my opinion.
I saw people literally crumble while sharing/speaking before they were ready and then stopped going to meetings - I don't see how that helps a newcomer (or yourself).
If it were me and my sponsor was pressuring me to the point where I'd lie to get her off my case, I'd find another sponsor. You're dealing with enough change in early sobriety that this kind of stress shouldn't be forced on you (again, my opinion).
You're not alone, rika. Don't be afraid to say no thank you.
Hbee