Most people start having really noticeable symptoms at 5 or 6 weeks. Sometimes there will be little symptoms before but they can also be similar to AF symptoms, bloating, cramping, etc. It's really just hard to know until after AF is due and a test is positive. Good luck.
every body is different someone fell during her early 8 weeks someone dont .
there actually are no pregnancy symptoms, meaning there are no symptoms that tell you if you are pregnant or not.
many women have none at all.
some experience cramping, nausea, vomiting, food aversions, food cravings, heart burn, diarrhea, constipation, etc.
personally i had cramping from before my BFP until about 8 weeks of pregnancy.
sore breasts for the first trimester.
heart burn from 6-10 weeks
and nausea if i did not eat every hour for the first 14 weeks or so. no vomiting thankfully for me.
a close friend had no symptoms at all until 14 weeks, then started vomiting 20+ times a day and required several rounds of medication and hospitalization until it resolved.
so everyone is different and there is no "normal"