I’m really struggling to feel safe without my boyfriend

I have PTSD from a very abusive past relationship which has been diagnosed by a doctor and I’m under treatment for. I am In a healthy relationship now with the most amazing man and I couldn’t ask for more from him, he has helped me more then anyone to cope with my ptsd and has made me feel safe for the first time In a very long time. We live together and do everything together, he’s just left this morning as he’s gone on a trip to see some family, I couldn’t join him due to having to work but I’m going to meet him there in a weeks time for our vacation. Since he left this morning I feel like my safety nets been ripped from underneath me, I’ve been vomiting and have had panic attack after panic attack and I’m really struggling not having him close. I’ve never had anything like this before and I miss him so much. I know this is not normal but I would just like some support or tips on this please.