The hypos are normal, but can be quite fierce. What I did was do lots of extra tests so they didn't catch me out. I also kept Lucode with me and by my bed as I found that worked faster than anything else. I also got up around 2am to test my blood sugar to make sure it was ok.
I know the advice varies from place to place, but I was told to test 2 hours after meals and try to keep my sugars under 7.8 then.That was hard sometimes. What I did was have my bolus insulin slightly early so it would already be working when the spike happened. I also did correction doses if I did get say a 10 or 11.
Sometimes, in order to get that spike down, I had to have extra insulin and then later a tiny snack in between meals so I didn't go low. I wouldn't normally bother to do that, but because pregnancy needs such tight control, I preferred to push my spikes right down and 'top up' my sugars with a little snack later if I needed to. I found that worked fine, but it may not suit everyone. The trick is not to have too large a snack!
Congratulations on your pregnancy
There's lots of advice here if you have a read around, and please ask any more questions. We all know what hard work a diabetic pregnancy is!