Hello,
Thanks for the query to H.C.M. Forum.
However you didn't mention the menses date so very difficult to predict any thing.
The symptoms are
tiredness, lower
abdominal pain ( mild pain & heaviness) , lower back ache, cramps .
These all symptoms are suggestive of
pregnancy.
You can test home pregnancy test after 7 days ( late date of period).
If 13 & 15 days are near ovulation days then chances of pregnancy are there.
If you want early test then get in HCG (
blood test) for confirmation of pregnancy.
Good luck.
Dr. HET