New allergy?

Kirsten 🍁

So my children ate 4 years apart. After having my first child I discovered a love for avocados and ate them frequently, during my 2nd pregnancy I couldn’t eat them, they’d make me puke and make my stomach feel awful! My child is now 1 & 1/2 And I just a tried eating avocado for the first time since giving birth and I’m nauseous and my stomach is in so much pain. Is it possible to have developed a allergy to it?