The most common and most likely answer to this crossword clue is the 7 letter word PESSARY
P
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Buddy explains!

The straight part
We know that "contraceptive" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case contraceptive = pessary.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PESSARY mean?
PESSARY noun- A medical device similar to the outer ring of a contraceptive diaphragm, most commonly used to support a displaced uterus; also called therapeutic pessary.
- (contraception) A diaphragm or cervical cap.
- A vaginal suppository.