Bridge the 3 card 7 club bid
You can bid whatever you like, as long as it is within convention agreed between you and your partner, and when the opposition ask your partner (not you) they can say what the bid means.

When you have a weak hand and a 7-long suit, bidding at the 3 level (i.e. jumping two bids) is called a pre-empt. The point of a pre-empt is to take away the bidding space your opponents would use to find their best contract; while making a bid that (if it becomes a doubled contract) you would not lose too many points over. ("Too many" being defined as more than your opponents would have got if you'd never bid and they'd made a contract themselves).

In the convention I play, 3c (i.e. jumping one club bid) would mean a strong hand. 4c would be a pre-empt (i.e. a weak hand). BUT in order to bid 4c over 1s you'd need a stronger hand than needed to bid 3c, as if the contract is doubled you're one trick further off the contract.

Without knowing how many picture cards you have (especially in clubs), I can't answer for certain, but I think your best bid would probably have been to pass.