Pregnant or not

Has anyone gotten a positive test. Went to the OB and past positive there too but OB didn't see anything in the womb? They told me I possibly miscarried. I've had one before back in 2012, so I feel like I would've been very aware if I did. Since my last appointment my HCG has gone up but I'm waiting in constant confusion for my next appointment. Sometimes I feel pregnant sometimes I don't. I don't want to keep stressing my hubby out if I'm not really pregnant and it's all in my mind. I've had many symptoms along with heavy to mild spotting but not enough to soak a pad. Could it be my baby is hiding?