Many English learners worry too much about tense. If you stopped 100 native English speakers in the street and asked them about tense, one of them might give you an intelligent answer—if you were lucky. The other 99 would know little about terms like "past perfect" or "present continuous". And they would know nothing about aspect, voice or mood. But they can all speak fluent English and communicate effectively. Of course, for ESL it helps to know about tenses, but don't become obsessed with them. Be like those native speakers! Speak naturally!