Little to no period every month

Gee
My periods used to be really heavy and would last around 5 or 6 days. For the past 3 months they have been very light and short. I missed my October period completely, I thought I was pregnant I'm not on birth control and me and my bf haven't used a condom in awhile , I had morning sickness, nonstop bloating, boobs are unbelievably sore. Than November it was light bleeding one day the next day was pink spotting. This month it was exactly the same as last month. I'm still getting cramps with them. They are usually like 3 or 4 days late. I keep thinking I might be pregnant but home tests are negative. I don't have a primary doctor right now. I just want yalls opinion. Is this normal?