Implantation Bleeding?

S • In-Love & Married to my bff. Together 7 yrs! We have an angel in heaven. Ttc our rainbow baby! Hopefully it doesn`t take another 5 yrs!
I had a "threatened miscarriage." Had some light spotting Thanksgiving night, at 5 wk and 6 days. It was my first pregnancy, so me and my husband were super scared when I started spotting so we went to the ER, they did a vaginal ultrasound and didn't see the baby at all. At first they just thought it was a super early pregnancy, but then they checked my hcg levels. Unfortunately they weren't as high. The next day at my six week mark, I woke up to the find that the pad had alot of blood on it. So the doctors had me going back every two days to monitor my hcg levels. They continued to decrease, I miscarried naturally without having to get a D&C. I bled from November 28th- December 15th. The doctors told me to wait three months to try again but to keep taking my prenatals. My husband and I are still pretty devistated. It's been about 2 months that I've miscarried. I'd be going on 16 weeks. I've been charting my temps, they vary. I suppose it's my body getting back to normal. I also chart when hubby and I do the do. I've had my period every months since. Except for I got my first period January 1st to January 6th, and then started like spotting a bit like a brownish mucus type of thing on January 27, then on the 28th and 29th I bled like a regular period, the 30th I didn't bleed or spot, and the 31st I spotted and that was the last day of it. That was bizarre because I've never gotten my period twice in one month, at first I thought it was Implantation bleeding. But the two days I actually did bleed were pretty heavy. I read that it's not supposed to be heavy. My normal period before the miscarriage was 7-8 days, these periods are just a little shorter. Has anybody else been feeling pregnant with nausea after eating everything, bloating, head aches, back aches, frequent urination, but gotten negative results after testing? Maybe it's just in my head.