Help!

I’m a little lost here. I had my last period back in October, it ended on the 8th. I started cramping on the 30th pretty bad and that went on for a week, I started spotting from the 6th-10th still cramping. I bled a little harder halfway through what I assumed was my period. I never cramp for that long, I’ve also have been recently getting super nauseous and hungry. I’m over emotional and have been up for days because I just can’t sleep??? I’ve taken four pregnancy test now but they have all been a super faint positive. The first one I took last Wednesday (Nov 13), the second one I took the very next morning (Nov 14) and the last one I took last night (Nov 17). The test I took this morning is so faint I couldn’t even catch it on my camera. So what gives? Could I really be pregnant? I really hope so, I had a miscarriage back in August and I would give anything to be pregnant before Christmas.