The first missed period as the first sign of pregnancy, but a missed period can be caused by a number of factors. Some women experience spotting about two weeks after the first day of the previous period as the first sign of pregnancy. Changes in mood is caused by hormonal surges early in pregnancy can be quite severe. Often this is the first symptom of pregnancy noticed by family members, Pain in breast and enlargement is especially common during very early pregnancy, but often disappears after a few weeks. The area around your nipples turns dark. Tiredness, nausea and vomiting, sometimes referred to as morning sickness, ranging from queasiness to severe vomiting that can manifest just in the morning.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
In my opinion everyone can have different symptoms. Like me I had the implantation bleeding but before I bled I was in a tremendous amount of pain killed over on the couch could barely move. I never had nausea, vomiting, or sore boobs. I was tired all the time and my stomach would twitch(twitched so hard it would move my boobs) for 5 minutes at a time with about a 1 minute break for 2 weeks. this was before I found out I was pregnant.