Double vision and improvement after surgery

I (26 years old) have squit eye (left eye needing correction) for as long as I can remember and finally I made up my mind to get it corrected through surgery. But I have a few doubts that I wanted to get answers to from people who've have the surgery.

1. I can control and focus my eyes to look 'normal' (maybe for a minute or 2 max) but during that time I get double vision and soon I start getting headache. So is this normal even after surgery?

2. I can see normally from both eyes individually but when I focus the eyes together I can't see far off objects clearly and they're very hazy. Did you guys experience something similar?

I consulted a reputed ophthalmologist in my city (who will conduct the surgery) and asked these doubts and she said 'Everything will be fine after your eyes recover in some time". I wasn't satisfied with the answer because she didn't even take a minute to think about it and answered instantly. I'm not sure if it's because of her experience or maybe she wasn't interested/paying attention to my questions then. So I found this community and wanted to get answers from someone who's going through the same issues.