Is it Normal To Look Pregnant 3-4 Months Post Tummy Tuck?

Thank you for the question.

No, it is not “normal” to look pregnant 3 to 4 months after tummy tuck surgery. Obviously, based on your question, you must have concerns about your situation;  these concerns would be best addressed by your plastic surgeon who will have the benefit of examining you and determining whether your  “look” is related to significant swelling or whether you are experiencing a complication.

Although it is not possible to give you precise advice regarding your situation, abdominalwall "swelling" after tummy tuck may be related to:

1. Swelling in the soft tissues.  This may take several months to resolve and may worsen with increased activity  or at the end of the day.   Patience  is required to allow for resolution of the swelling. The swelling occurs because of the interruption of venous and lymphatic channels that occurs during the tummy tuck operation.
2. Fluid accumulation in the space between the skin and the abdominal wall muscle.  this may consist of blood ( hematoma)  or serum (seroma).  This fluid accumulation can generally be diagnosed by physical examination ( occasionally ultrasound  may be helpful).  Treatment consists of aspiration;  several episodes of aspiration may be necessary. 
3. Separation of the abdominal wall muscle repair may lead to a swelling/bulge appearance. This may be diagnosed on physical examination  with your surgeon examining you in different bodily positions. One of the steps of a tummy tuck procedure involves reapproximation (plication)  of the rectus muscles.  These muscles have spread apart during pregnancy and/or weight gain. Bringing them together again in the midline helps to “tighten” the abdominal wall as well as to narrow the waistline.
4. Residual adipose tissue may be confused for swelling. Again this is most easily diagnosed by physical examination. Additional liposuction surgery maybe necessary to improve the results of surgery.
Generally, it takes many months for swelling to resolve after tummy tuck surgery and it may take up to one year  (or greater)  a complete skin redraping  to occur.
I hope this helps.

do you mean that you have a swollen belly or that you're literally pregnant, please give more details than those to assess your case better.

No it really should not be looking like that....But..I have seen patients that have such a curve to their lower back (sway back or lumbar lordosis) that no amount of sutures can overcome their poor posture...If that is not the case then you should see your surgeon as to his/her opinion...An ultrasound is inexpensive and can rule out a seroma or not....