Thanks for writing to us with your health concern.
At 17 weeks and 6 days, you would definitely be showing.
And at 18 weeks, a pregnancy
cannot be cryptic by any means !
would be most confirmatory.
A quantitative blood test
too would conclusively tell you if you are pregnant.
Please schedule an appointment with a gynecologist.
If a pregnancy is suspected an ultrasound would obviously be done.
Do not delay this long.
If you are not pregnant, a reason must be sought for not having had a period for almost 5 months now !
Rule out other conditions like hypothyroidism
, polycystic ovarian disease
, obesity or a hormonal imbalance.
All the best and take care.