I did 1 round of IVF recently with a needle phobia. The fear of pain isn't my problem, but the fact that the needles are anywhere near me. We got through it following 3 things:
1. DH came with me for any needle I had to have and calms me down.. But he has always had to do this anyway!
2. DH did all my home needles, and told me just before doing it so I wouldn't startle. The first few were rough with a mini breakdown after each, but each day got better!
3. Emla cream. It is amazing! The first IVF nurse introduced me and I've used ever since, and I believe it is solely responsible for me being better with needles now than ever before! You apply a generous bit of cream to the spot 40-60 mins before the needle, don't rub in, and put a plastic patch over it. It will numb the area completely if left on long enough, just wipe it off before you do the needle. We used this for all blood tests and the trigger shot, but not for the daily needles as they are quite small and quick (as things go) so I put up with them. After 20 seconds I couldn't feel anything anymore unlike standard needles.
Ask your FS about the down reg cycle (I think it is called). This takes longer. 6 weeks for me, but it is less needles. For me, I sniffed Synarel spray twice a day for most of those 6 weeks. DH gave me the daily needle for 1-2 weeks (I forget now), then the trigger shot at the end. You will also have blood tests. Every 2nd day for me for maybe 2 weeks. If you follow the short cycle I think it only takes 3-4 weeks, but you have an extra needle instead of the spray.. It was an easy decision for me.