You have a nice hand with 17 HCP and a great heart suit.
1♥ should be the standard opening. to think about 1NT seems abstrus to me.
Partner responds 1♠. Now you have a choice of evils.
2♥ is a great undebid
2♠ promises normally a 4-carder and is an underbid too
2NT without any stopper in the minors grrrrrrrrrrrrrrrrrrrrrrrr
3♣ is forcing and can be a 3-carder but on 632???
3♦ is just more worse than 3♣
3♥ should show a 6-carder, but seems the best lye with that monster 5-carder
3♠ should definitely show a 4-carder
Looking forward to hear the opinion of the experts
1♥ pass 1♠ pass
???