First batch. Tons of bubbling first day and half, little to none now

I can update this later with my specific notes/ingredients, but for now, just the basics...5 gallon brew of an irish stout. The morning after I put it in the fermenting bucket, I woke up to a mess. Foam had come out through the airlock and there was liquid and foam all over the lid and down the side. The amount of pressure building inside made it seem like the lock would blow off at any second (in fact when I removed it to clean, foam shot out through the hole.) I quickly found some instructions for a blow off type rig which was basically leaving the base of the airlock in the lid, attaching a tube to it, and running the tube into a gallon jug of half water/half sanitizer. The remainder of that day, it was bubbling furiously. It looked like rapidly boiling water. Since then however, I haven't really noticed any bubbling. There is pressure in the bucket still, because if I lightly push on the lid, gas will bubble through into the jug. Do I have anything to worry about here? The bucket is in a dark 65-70 degree closet. Any advice would be great. Thanks.