If there were a good guy on the horizon, right now and already, then you could be weighing the pros and cons. Because if it is something valuable in the long run, there would be a benefit in developing a relationship right now so that once the baby is born, the man could basically be his father.

Since there is no good guy on the horizon and you are talking bars or dating sites, then the answer is a resounding no (so I am joining the chorus here).

Hopefully, you will get the nesting bug soon and your energy will be focused on making preparations for the arrival.