I've heard that scorpios sometimes have trouble explaining their feelings even though they feel so deeply is this true just because their sun might not go well with their mercury?
Yes it’s true Scorpio do have trouble explaining their feelings but their Mercury sign and their Moon sign play a part as well. Mercury will decide if they can actually say what they’re feeling, and having a Scorpio mercury will make it easier, but a Libra or Sagittarius mercury would make it harder to speak their feelings, even though they are extroverted mercury signs. The Scorpio’s moon sign will decide if they even know what they are feeling, and if they would even want to share their feelings. Aries, Taurus, Cancer, Leo, Sagittarius and Pisces moons would find it easier to know what they’re feeling while Gemini, Virgo, Libra, Scorpio, Capricorn and Aquarius moons would make it more difficult.