Flashbacks after bad ecstasy trip.?

Alright, I know mdma is bad... so please don't tell me not to do it and how its harmful. I'm never doing it again after the last episode I had. Anyway, I've only rolled 4 times in my life, 3 times in one week (last week). Last time I did it I took 2 ecstasy caps and went to the club. The whole night I didn't feel too great, I had alot of stress on my mind and felt like I never "blew up". My friends and I left the club and went to smoke some pot. We smoked a blunt and at the end of the blunt I felt like my memory span was 2 seconds, reality seemed to blend in, I was getting weird hallucinations and nothing felt real, sort of like I was dead. I freaked out hard. I have never had a panic attack before and I felt like my heart was about to explode. The rest of the night it kept coming in waves. I would feel good for a minute, then I would get slapped in the face with it again. Lights seemed too intensely bright to look at, it was the worst night of my life. It has been 7 days since I tripped and this whole past week I have felt like reality isn't reality. It felt like it was getting better, then yesterday I smoked pot and I got really intense flashbacks, almost like I was tripping again. Right now as I'm writing this nothing really feels the same, its hard to pinpoint what is different but something definitely is. I have alot of anxiety now and I never have before. Do you think that this will get better in time? Will the derealization feeling go away? It's the most horrible feeling I've ever experienced, it's like the trip comes back to me if I think about it or if I smoke pot (which I stopped doing as well). Please help.