alters and parts are they one and the same?

Ive read recently that they are different - that alters have their own personalities but parts dont they are just different aspects of yourself that you call up to help when needed -

its very confusing

I have blanks - i used to have conversations inside - recently someone made them quiet and then these things happened....

There has been silence or a long time now apart from the part of me that says bad things- now i am disassociating...

each time worse than the last....

I went to an ATM to get money to pay my sister back what i borrowed from her and i realised later that i must have walked away without taking the money so there goes $50 i cant afford to lose

the second one i apparently put my glasses in with someones washing at work ..... i dont remember - i remember having them - then they were gone

the third time i almost pulled into a three lane traffic on a major road through a red light - but i realised - woke up? just before i hit the traffic.....

what do you do if these things happen to you?

this is the last two days and im afraid what will happen next....

I have no control over the blanks or when they happen....

so parts....alters.. the same or different...