I was told (diagnosed last september) that I might get headaches when high, I didn't, but apparently it is normal.
Lorna it is probably not my place to try and give anyone advice as I am barely any better at this than you are but I wish someone had said this to me nine months ago.
Lots of people will give you advice (me included now!) and some of that advice will be great and some of it will be wrong. Some people will give you advice, and you might later find they have blood sugar results you might not want to have yourself. Some people will tell you to do one thing and then someone will come along and say something totally different. If you try to follow all the advice you get, on this forum and in other places, you will end up running in circles, and it is really awful. Just be aware that it is totally possible for the people you are talking to not to know what they're doing.
I could tell you lots of things I did but that would just be one more person telling you what to do.
The only thing I would say is that a lot, really a LOT of people will say "you can eat what you like as long as you take the insulin for it" and that may be true for some people. For those people, "what they like" might just be really low carb stuff anyway. But if you are ending up really high all the time then look at what you're eating because some stuff is way easier to deal with than others. I think a lot of people say that because they really want it to be true, and maybe it is for some people, but I think it might be really dodgy advice that can get people in trouble.
I hope that helps.