I accidentally drained my pool last night. I was letting out water because of excessive rain, and when I put the pump back on, I turned it to backwash instead of filter. Almost all the water drained. The liner is coming loose (puffy) in several places. Do we just fill it back up, or do we need to get someone out here? Will the water make the liner go back down? Also, have I ruined my pump running it on backwash all night with the water draining/drained?