What's up with me?

Hi, I'm 19 years old I'll be 20 December. Me and my fiance recently had a miscarriage back in October, and have been trying again ever since. Ever since I've had the miscarriage I've had problems with my stomach, such as I wake up feeling sick every morning but after a little while it's goes away. I normally take a pregnancy test when I start to get to where I throw up in the mornings and but I hadn't been throwing up for a while till yesterday morning and last night, but I haven't tested lately because of all the negatives we've been getting, it's depressing but now my cycle started around the first of the month and normally only lasts for 5 days but I have been been this whole month so far, lightly and then spotting sometimes it will even stop for a little while and start but it's not heavy like when I'm on my period. What's going on with me?