Severe sickness

Hi guys. I guess I'm looking for a bit of support really. I was married for 3 years and got pregnant twice in that time. I was diagnosed with severe HG both times. The first ended in miscarriage but the second was just horrendous. I wasnt sick but constantly dry heaving every 2 seconds for 8 weeks. I didn't eat, sleep and lost so much weight. It sent me off the rails and in the end after every medication possible the doctor told me that I needed to terminate and that was my only option. I felt so ill and lifeless but as soon as I had the procedure I was totally back to normal. Since then my husband and I are no longer together and my new partner and i are talking about trying again hoping and praying it will be different for me. I really want this but god am I scared that I'm going to be in that situation again... I just cant help but worry about it. We've even paid thousands for my partner to have a vasectomy reversal.! Has anyone else been in this situation?