It is not a silly phobia at all ! I have panic disorder, so if something ... anything.. rubs me the wrong way I can have an attack. So don't feel bad!!
You generally only have bloodwork twice. I was on the unlucky side. I had bloodwork to confirm the pregnancy, then bloodwork after I found out (my profile). I ALMOST had to have it done again because they dropped a few of the tubes of blood ! I freaked haha. I had blood work at 24 weeks to check my antibodies (im RH negative). Bloodwork at 28 weeks to check for diabetes. Failed that test and had to do the phase two diabetes check, which was 3 needles in one day (one before the test, one in the middle, and one after)
Not everyone is like this!! I just seemed to have a rough go haha. However, I posted a reply to your question to make you aware that this is possible. But not EVERY month. Crazy nurse, she was just being a beyatch.
No one likes getting bloodwork. I used to get very nervous before they'd take blood... since Ive had it taken so many times over the last few months I just kind of got used to it. But before this happened I'd sit in that chair and just.. suck it up. I tell myself 'this HAS to be done, and freaking out isn't going to stop it from happening or make anything better'. I have a phobia of planes and when it came time for me to get on one.. I almost passed out (security didn't even check me, they just put me right on the plane haha). Once on the plane I used this same method of thinking. It got me threw. I hated every minute of it... but it got me threw.
Good luck !!
Hope I helped.