So im 17 days late on my period I took tests around 11 days late they were really really faint…

So im 17 days late on my period I took tests around 11 days late they were really really faint second lines , I havent had any symptoms of pregnancy no nausea nothing ! I cant get an appt until the 31st , has anyone gone through this and ended up being prego ? Or could it be just the sac grew and no baby ? Im so confused on whats going on with me with my son I mossed my period for 7 days took a test and it was positive instantly and had all the symptoms early like right when I found out