Mama, I know this is nerve-wracking especially after what you went through in February. A faint line is still a line, pero honestly, please get a blood test done ASAP to be sure, kasi mas accurate ito kaysa home tests, lalo na kung delayed ka lang ng 2 days.
A few of us mums went through the same thing and the blood work gave us the real answer faster than waiting and stressing. Sending you hugs, you'll know for sure soon.