ps23 my condolences on your lost. You must do whatever you feel up to.
The funeral isn't for the person who has died. It's for all the people who are left.
Your Grandmother knew you loved her, you said your goodbyes.
Your parents and aunties aren't demanding you go, so you don't have to worry about that.
The only question is what you want to do. And you don't need a bunch of strangers (some of whom are quite, quite rude) to give you permission.
It's ok to go. It's ok not to go.
I do have some personal experience. I went to a close friend's Mum's funeral 37 weeks when I was pregnant with twins.
It was about an hour away from home but it was in a big city so plenty of hospitals. I took my notes with me.
I couldn't drive by that point (too big) so my Mum took me.
It was upsetting but it didn't impact my blood pressure. (Though fortunately I hadn't had any prior BP issues).
It was very tiring though, and I did have a little problem getting a seat at the funeral tea as it was very busy. We didn't stay for the whole thing, just long enough to pay our respects. The actual funeral service was less stressful than afterwards.
In summary, I went and it was upsetting and tiring but it didn't do either me or my two babies any harm.
However that was my choice - it doesn't mean it has to be yours.
You need to make whatever decision works best for you. You don't have to decide today. See how you feel nearer the time.
If I have a really hard decision to make I usually flip a coin. That generally clarifies my thinking.
Best wishes 