swallow, gulp down / (figuratively) digest, understand

pill / oral contraceptive pill

physically painful, agonizing / difficult, strenuous, mentally trying / mentally agonizing / tight (budget etc.), straitened / forced

big, large, great

no problem; no objection; it doesn't matter

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

jump to conclusion, get ahead of oneself

(slang) Alternative form of 大きいお友達