Question: is there ANY way to get memories back from a Xan blackout???

Context: I was on xans and fen together for about 2 months straight. Fen is my DOC (for the last 5 years), Xan is usually my party drug but I was on a bender. Anyways, I can never remember anything when I take them. So I was taking them A LOT and one day I woke up next to my boyfriend and he was dead. Called 911, he couldn't be saved. His mom showed up, got mad and told the police I had a warrant (contmept of court for traffic ticket) so I went to jail. This happened on a Sunday. I thought 2 days before, Friday, he had gotten into an argument with his beother about not driving us to get drugs that night and I said don't worry, I'll get us an Uber tomorrow. I remember this specifically bc he made a huge deal about it even tho we had drugs. I had to drag him to bed and to leave it alone. The next morning I paid for the Uber with my cash app. So when I got out of jail I'm looking thru my transactions and that happened the previous Saturday. I lost an entire week. I NEED to remember what happened the night before he OD'ed. How do I get these memories back?