Confused help me please.

Having this little soft feeling on my stomach.. not sure what it is, feeking bloated, frequesnt urination, tired, lower back ache, alot of saliva, little headache. With a very faint line. Yesturday and Today came with a faint line that was very light.

If I am pregnant I am around 7 weeks.. my hcg is low that is why it is taking forever for a postive. Last week I went in for a blood test and negative. BUT faint lines seem to be coming around and I had very light pink spotting that started on Thursday and ended Saturday. Not sure what's going on. Anyone have Ideas.