This depends on the purpose for buying this bitcoin in the first place with the amount you claimed that you purchased, if the reason is to sell immediately to buy other altcoins so be it but I think you should be wise in any decision you want to make as regards this the final decision is what do you want because this is your money.
There is a lot of speculation considering the best time to sell. One thing is for sure; if you sold at the top, you did well. Now, looking forward, the cryptocurrency sphere seems to be recovering from its 2018 lows, having seen a recovery of more than 300% for Bitcoins all-time-low price.
This recovery may hint at an upcoming, new bull market that may increase the coins price to new highs, which could mean that selling at this moment may not be a good idea, but thats up for you to decide.
However, i think also be facing a new drop in price, since the recent recovery was quite sudden and volatile in nature. In that case, selling right now would help you buy back later on.