I need to know if I'm being called a b-word [closed]

As a noun, the word "bitch" means (among other things)

an unkind or unpleasant woman

(source)

... and this is what you're concerned about people calling you.

But as a verb, the meaning is different:

to complain and make unkind remarks about someone or something

(source)

That is: "bitching" means "complaining" rather than specifically "being a bitch (unpleasant woman)". Of course, an unpleasant woman may complain a lot, and make unkind remarks, but so do plenty of people (men and women alike) who wouldn't be described as bitches. So, to answer your question directly: no, that doesn't imply that they think you're a bitch; it's still possible that they do, but you can't tell from this statement along.