You are playing 15-17 point no trumps, five card majors, four card diamond bids, and three card club bids listed on many convention cards. And you have an unusual 14 high card point 4-4-3-2 hand that basically violates all the rules, like this:
(s) QJTx (h) QJxx (d) KQx (c) Kx.
Give me another T (or even a 9) in one of the major suits, and I might consider this a "weak" 15 for 1NT. Upgrade my spade Q to a K (and compensate by downgrading K of clubs to Q of clubs), and I would consider bidding a "strong" four card major. But as the hand stands, I wouldn't do either of these things.
What would most people do? Perhaps a three-card one diamond is the least of evils? Or would "pass" be a viable option, even though most people wouldn't pass 14 point hands? (Downgrade one of kings to a Q, and I'd pass the resulting 13- point hand.)