I had terribly debilitating HG in my first pregnancy, didn’t continue pregnancy, I was down to 6 stone, was skin and bone and incredibly unwell.
5 years later pregnant with DC1 and no sickness apart from the day I got a positive test.
5 years after that pregnant with DC2 and mostly manageable sickness, but lasted to around 17 weeks iirc.
7 years later pregnant with DC3 I had on of sickness all through the pregnancy, but was never as debilitating as the HG.
Final pregnancy was twins and I expected to get terrible HG this time and while I was sick throughout on and off it was manageable. It was the absolute utter exhaustion of carrying 2 that got me.
In between DC2 &3 I had a pregnancy that sadly ended at 10 weeks and I did have HG again that time.
Whilst the odds are more likely it is not a certainty that you will get it again. After my very first pregnancy I never would have thought I would manage another. The HG was incredibly traumatic along with terminating, it took me a very very long time to be well again after that so I totally understand the anxiety and trauma around falling pregnant again.
It might be worth talking to your doctors and see what they could maybe offer you in terms of medication should it reoccur again for you. I was never offered any medication (didn’t even know that it was an option) in my first pregnancy despite being so incredibly unwell I couldn’t even keep down water! Be prepared to push your GP because there are things they can prescribe to help and you may have to try a few different things before you find what works.