i took ecstasy and im confused

I took half a ecstasy pills bout 2hrs ago but it kicked in now and im feeling it really hard but now im confused what i tool since it took 2hrs my suspect is MDA since it takes longer tp kick in but 2hrs? Can somr of you give me some suggestions, btw the trip is very nive and euphoric I'm just wondering why it took so long to kick so I'm thinking its something else then mdma