Reporting gain/loss on purchasing US ETFs

Do i need to report gain/loss in the follwing situation

- converted CAD to USD at exchange rate #1
- next week purchased US ETF using my USD. The broker reports the value in USD ( original) and its equivalent in CAD ( based on the exchange rate on the transaction date)
- there is difference between the initial conversion rate that the one on the settlement day ( and theoretical gain/ loss in CAD).
- if i keep this ETF without selling , do I need to report this as gain/loss ?
- if yes, do i just manually add it to 5008 form  within TurboTax) ; is it under " investment" ( as there was not actual gain/ loss).
Thanks in advance
Thanks