Hi lea,
My condolences about losing your grandmother, and your boyfriend.
Yes, he could be helping you by giving you a warning of an impending death, but it's typical that he can't be heard well.
There are so many 'channel's we have that connect us with the spiritual side! You are already open to some of them. With your interest and your connection to your boyfriend, you will probably be opening others as you develope spiritually. It would be too shocking to suddenly have many open at once !
Was your grandmother ill before she passed? That and other reasons could be keeping her busy and not in tune with you right now. If you were close, she may show up later. Your connection is affected by alot of factors, so don't worry about her. But , now that I say that, if her own spirit was greatly upset about something, she might be stuck somewhere in-between. Usually though, they just need time to get used to their new surroundings. (It's not just you, it's them too.
)
If you keep your own health and spirits up, you'll most likely be hearing alot more from the afterlife! And those of us who've read the material our host Bruce Moen has written find that it has helped immensely to speed up our spiritual development. Enjoy your sensitivity to this amazing part of life!
Betson