Please help! 2 weeks late, with bleeding for only 2 days?

[MommyTompkins]

I'm not really sure what's going on, i could use some advice. So my fiancé and i lost our baby in April, we were almost 3 months pregnant. Since then i had a normal, 6 day period in May, a 4 day period 28 days later, and then this month it didn't come on time. It was 2 weeks late, exactly. And only lasted yesterday and the day before. I'm still spotting VERY little, only when i wipe or check my cp, which is high, hard, and closed. I've been really nauseous lately, in the early morning, later evening, and occasionally in between and when i eat. I've been tired, but i figured it was just the good ole Florida summer! The blood was red, now it's more pinkish when i wipe. And i can't seemto way enough throughout the day. I took 5 tests, 4 negatives, and the other, I'm not really sure... It LOOKED positive, but i had pulled it apart by mistake, then it showed up positive, so i thought it might have just been an evap line because i took another one the same day and negative. Anyone else ever experience anything like this? I'm only 19, so I'm freaking out...