I was just riding and my bike felt wobbly and lost air I'm a minute so it wasnt like 5 seconds and all the air came out unlike the other times I've had it. I thought it was a puncture cause I didnt do anything crazy just riding. Anyone know what could be the cause? This is my 2nd flat in 2 months, of riding. Should I patch it up instead of buying a new tube? Also could it be a problem with the quality of the tube?