Question- New to the group

Ni

I'm 42 yrs old and have had my period for 30 yrs now- my periods the last couple of yrs since TTC have always been 3 days long and regular. I've ALWAYS had to use tampons/pads because it was NEVER light enough not to. A couple of months ago I think I had a MMC- didnt go to Dr to confirm, but my husband said the blood smelled dead/death like. I can't smell. I thought it was just a regular period. This last cycle I was late by 4 days. Took test and BFN. Then a few days later I started cramping in a way I never have. For seven days I spotted - BUT NOT even enough for a panty liner even( ONLY WHEN I WIPED AFTER BATHROOM) . I didn't experience implantation bleeding w/my daughter who is about to be 13. I really don't remember anything unusual except I started having morning sickness so I took a test. NOW I am very tired, have cravings for red meat, nauesous, headaches, lower back pain etc. I logged my spotting as period because I haven't experienced implantation bleeding. Said next period due in 2 weeks. Can you have late implantation bleeding? I'm SO confused!!! My Dr said 2 yrs ago I was too young for menopause. I'm on pills for depression/anxiety AND REALLY WORRIED if I might be pregnant it might harm baby. Anyone else go through anything like this? O DON'T know whats going on but something is definitely not right.