This is when you should start visiting a doctor.
Your emotions will still be a roller coaster at this point since the news of the pregnancy is probably just about sinking in. This may feel a lot PMS.
Don't worry, you and everyone around you will get used to it!

Your baby is now the size of a...
A lentil, around a quarter of an inch. Her brain and nervous system are developing rapidly and her optic vesicles, which will later form her eyes, have also begun development. However, the biggest development is that of the nose, mouth and ears which are all beginning to take shape.
If you could see inside, you would see baby’s eyes, nostrils and limbs all beginning to form. Your baby’s heart rate will be beating about 100-160 times a minute, but may not be detected on an ultrasound just yet.
Pregnancy symptoms at 6 weeks
No visible changes on the outside, but it's all happening on the inside… the pregnancy hormone hCG is causing all sorts of stuff to happen, your kidneys are much more efficient, and you will be peeing often.You may feel bloated, have food cravings and morning sickness.
Tips and advice for pregnancy at 6 weeks
Think about making a visit to the doctor, so you can have the pregnancy officially confirmed, and have the blood tests required to check for Rh factor and your immunity to rubella etc. Your urine will be tested at each doctor visit for glucose, protein.